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Finding the Fourth Proportional to 6,885.71, 10,328.55 and 1,955.40

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Solution

The fourth proportional to 6,885.71, 10,328.55 and 1,955.40 is: 2,933.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885.71 : 10,328.55 = 1,955.40 : x
  2. Step 2: Convert to fraction form
    6,885.71/10,328.55 = 1,955.40/x
  3. Step 3: Cross multiply
    6,885.71x = 10,328.55 × 1,955.40
  4. Step 4: Simplify right side
    6,885.71x = 20,196,385.25
  5. Step 5: Solve for x
    x = 20,196,385.25/6,885.71
  6. Step 6: Final answer
    x = 2,933.09

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.