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Finding the Fourth Proportional to 8,607.77, 12,957.03 and 7,339.31

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Solution

The fourth proportional to 8,607.77, 12,957.03 and 7,339.31 is: 11,047.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.77 : 12,957.03 = 7,339.31 : x
  2. Step 2: Convert to fraction form
    8,607.77/12,957.03 = 7,339.31/x
  3. Step 3: Cross multiply
    8,607.77x = 12,957.03 × 7,339.31
  4. Step 4: Simplify right side
    8,607.77x = 95,095,659.85
  5. Step 5: Solve for x
    x = 95,095,659.85/8,607.77
  6. Step 6: Final answer
    x = 11,047.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.