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Finding the Fourth Proportional to 8,156.76, 12,239.06 and 4,458.84

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Solution

The fourth proportional to 8,156.76, 12,239.06 and 4,458.84 is: 6,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.76 : 12,239.06 = 4,458.84 : x
  2. Step 2: Convert to fraction form
    8,156.76/12,239.06 = 4,458.84/x
  3. Step 3: Cross multiply
    8,156.76x = 12,239.06 × 4,458.84
  4. Step 4: Simplify right side
    8,156.76x = 54,572,010.29
  5. Step 5: Solve for x
    x = 54,572,010.29/8,156.76
  6. Step 6: Final answer
    x = 6,690.40

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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.