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Finding the Fourth Proportional to 3,713.40, 5,207.40 and 3,713.40

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Solution

The fourth proportional to 3,713.40, 5,207.40 and 3,713.40 is: 5,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,713.40 : 5,207.40 = 3,713.40 : x
  2. Step 2: Convert to fraction form
    3,713.40/5,207.40 = 3,713.40/x
  3. Step 3: Cross multiply
    3,713.40x = 5,207.40 × 3,713.40
  4. Step 4: Simplify right side
    3,713.40x = 19,337,159.16
  5. Step 5: Solve for x
    x = 19,337,159.16/3,713.40
  6. Step 6: Final answer
    x = 5,207.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.