Home / 3,461.50-5,191.18-1,270.40

Finding the Fourth Proportional to 3,461.50, 5,191.18 and 1,270.40

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Solution

The fourth proportional to 3,461.50, 5,191.18 and 1,270.40 is: 1,905.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,461.50 : 5,191.18 = 1,270.40 : x
  2. Step 2: Convert to fraction form
    3,461.50/5,191.18 = 1,270.40/x
  3. Step 3: Cross multiply
    3,461.50x = 5,191.18 × 1,270.40
  4. Step 4: Simplify right side
    3,461.50x = 6,594,875.07
  5. Step 5: Solve for x
    x = 6,594,875.07/3,461.50
  6. Step 6: Final answer
    x = 1,905.21

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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.