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Finding the Fourth Proportional to 8,680.68, 11,979.24 and 4,701.74

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Solution

The fourth proportional to 8,680.68, 11,979.24 and 4,701.74 is: 6,488.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.68 : 11,979.24 = 4,701.74 : x
  2. Step 2: Convert to fraction form
    8,680.68/11,979.24 = 4,701.74/x
  3. Step 3: Cross multiply
    8,680.68x = 11,979.24 × 4,701.74
  4. Step 4: Simplify right side
    8,680.68x = 56,323,271.88
  5. Step 5: Solve for x
    x = 56,323,271.88/8,680.68
  6. Step 6: Final answer
    x = 6,488.35

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