Home / 8,111.10-12,166.65-1,955.10

Finding the Fourth Proportional to 8,111.10, 12,166.65 and 1,955.10

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Solution

The fourth proportional to 8,111.10, 12,166.65 and 1,955.10 is: 2,932.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.10 : 12,166.65 = 1,955.10 : x
  2. Step 2: Convert to fraction form
    8,111.10/12,166.65 = 1,955.10/x
  3. Step 3: Cross multiply
    8,111.10x = 12,166.65 × 1,955.10
  4. Step 4: Simplify right side
    8,111.10x = 23,787,017.42
  5. Step 5: Solve for x
    x = 23,787,017.42/8,111.10
  6. Step 6: Final answer
    x = 2,932.65

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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.