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Finding the Fourth Proportional to 8,539.17, 12,808.80 and 5,065.89

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Solution

The fourth proportional to 8,539.17, 12,808.80 and 5,065.89 is: 7,598.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.17 : 12,808.80 = 5,065.89 : x
  2. Step 2: Convert to fraction form
    8,539.17/12,808.80 = 5,065.89/x
  3. Step 3: Cross multiply
    8,539.17x = 12,808.80 × 5,065.89
  4. Step 4: Simplify right side
    8,539.17x = 64,887,971.83
  5. Step 5: Solve for x
    x = 64,887,971.83/8,539.17
  6. Step 6: Final answer
    x = 7,598.86

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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.