Home / 3,612.10-5,414.42-1,390.40

Finding the Fourth Proportional to 3,612.10, 5,414.42 and 1,390.40

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Solution

The fourth proportional to 3,612.10, 5,414.42 and 1,390.40 is: 2,084.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.10 : 5,414.42 = 1,390.40 : x
  2. Step 2: Convert to fraction form
    3,612.10/5,414.42 = 1,390.40/x
  3. Step 3: Cross multiply
    3,612.10x = 5,414.42 × 1,390.40
  4. Step 4: Simplify right side
    3,612.10x = 7,528,209.57
  5. Step 5: Solve for x
    x = 7,528,209.57/3,612.10
  6. Step 6: Final answer
    x = 2,084.16

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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.