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Finding the Fourth Proportional to 3,347.64, 5,019.89 and 1,155.78

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Solution

The fourth proportional to 3,347.64, 5,019.89 and 1,155.78 is: 1,733.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,347.64 : 5,019.89 = 1,155.78 : x
  2. Step 2: Convert to fraction form
    3,347.64/5,019.89 = 1,155.78/x
  3. Step 3: Cross multiply
    3,347.64x = 5,019.89 × 1,155.78
  4. Step 4: Simplify right side
    3,347.64x = 5,801,882.69
  5. Step 5: Solve for x
    x = 5,801,882.69/3,347.64
  6. Step 6: Final answer
    x = 1,733.13

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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.