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Finding the Fourth Proportional to 9,265.78, 13,898.65 and 7,160.47

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Solution

The fourth proportional to 9,265.78, 13,898.65 and 7,160.47 is: 10,740.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,265.78 : 13,898.65 = 7,160.47 : x
  2. Step 2: Convert to fraction form
    9,265.78/13,898.65 = 7,160.47/x
  3. Step 3: Cross multiply
    9,265.78x = 13,898.65 × 7,160.47
  4. Step 4: Simplify right side
    9,265.78x = 99,520,866.37
  5. Step 5: Solve for x
    x = 99,520,866.37/9,265.78
  6. Step 6: Final answer
    x = 10,740.69

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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.