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Finding the Fourth Proportional to 8,557.64, 12,840.54 and 5,929.19

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Solution

The fourth proportional to 8,557.64, 12,840.54 and 5,929.19 is: 8,896.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.64 : 12,840.54 = 5,929.19 : x
  2. Step 2: Convert to fraction form
    8,557.64/12,840.54 = 5,929.19/x
  3. Step 3: Cross multiply
    8,557.64x = 12,840.54 × 5,929.19
  4. Step 4: Simplify right side
    8,557.64x = 76,134,011.23
  5. Step 5: Solve for x
    x = 76,134,011.23/8,557.64
  6. Step 6: Final answer
    x = 8,896.61

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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.