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Finding the Fourth Proportional to 3,337.40, 5,007 and 1,389.14

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Solution

The fourth proportional to 3,337.40, 5,007 and 1,389.14 is: 2,084.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,337.40 : 5,007 = 1,389.14 : x
  2. Step 2: Convert to fraction form
    3,337.40/5,007 = 1,389.14/x
  3. Step 3: Cross multiply
    3,337.40x = 5,007 × 1,389.14
  4. Step 4: Simplify right side
    3,337.40x = 6,955,423.98
  5. Step 5: Solve for x
    x = 6,955,423.98/3,337.40
  6. Step 6: Final answer
    x = 2,084.08

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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.