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Finding the Fourth Proportional to 8,762.58, 13,129.20 and 6,160.86

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Solution

The fourth proportional to 8,762.58, 13,129.20 and 6,160.86 is: 9,230.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.58 : 13,129.20 = 6,160.86 : x
  2. Step 2: Convert to fraction form
    8,762.58/13,129.20 = 6,160.86/x
  3. Step 3: Cross multiply
    8,762.58x = 13,129.20 × 6,160.86
  4. Step 4: Simplify right side
    8,762.58x = 80,887,163.11
  5. Step 5: Solve for x
    x = 80,887,163.11/8,762.58
  6. Step 6: Final answer
    x = 9,230.98

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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.