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Finding the Fourth Proportional to 9,128.54, 13,695.24 and 2,888.71

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Solution

The fourth proportional to 9,128.54, 13,695.24 and 2,888.71 is: 4,333.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.54 : 13,695.24 = 2,888.71 : x
  2. Step 2: Convert to fraction form
    9,128.54/13,695.24 = 2,888.71/x
  3. Step 3: Cross multiply
    9,128.54x = 13,695.24 × 2,888.71
  4. Step 4: Simplify right side
    9,128.54x = 39,561,576.74
  5. Step 5: Solve for x
    x = 39,561,576.74/9,128.54
  6. Step 6: Final answer
    x = 4,333.83

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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.