Home / 8,705.28-12,006.72-6,191.04

Finding the Fourth Proportional to 8,705.28, 12,006.72 and 6,191.04

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Solution

The fourth proportional to 8,705.28, 12,006.72 and 6,191.04 is: 8,538.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.28 : 12,006.72 = 6,191.04 : x
  2. Step 2: Convert to fraction form
    8,705.28/12,006.72 = 6,191.04/x
  3. Step 3: Cross multiply
    8,705.28x = 12,006.72 × 6,191.04
  4. Step 4: Simplify right side
    8,705.28x = 74,334,083.79
  5. Step 5: Solve for x
    x = 74,334,083.79/8,705.28
  6. Step 6: Final answer
    x = 8,538.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.