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Finding the Fourth Proportional to 9,128.52, 12,594.97 and 5,349.65

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Solution

The fourth proportional to 9,128.52, 12,594.97 and 5,349.65 is: 7,381.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.52 : 12,594.97 = 5,349.65 : x
  2. Step 2: Convert to fraction form
    9,128.52/12,594.97 = 5,349.65/x
  3. Step 3: Cross multiply
    9,128.52x = 12,594.97 × 5,349.65
  4. Step 4: Simplify right side
    9,128.52x = 67,378,681.26
  5. Step 5: Solve for x
    x = 67,378,681.26/9,128.52
  6. Step 6: Final answer
    x = 7,381.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.