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Finding the Fourth Proportional to 8,611.04, 12,916.68 and 4,908.86

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Solution

The fourth proportional to 8,611.04, 12,916.68 and 4,908.86 is: 7,363.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.04 : 12,916.68 = 4,908.86 : x
  2. Step 2: Convert to fraction form
    8,611.04/12,916.68 = 4,908.86/x
  3. Step 3: Cross multiply
    8,611.04x = 12,916.68 × 4,908.86
  4. Step 4: Simplify right side
    8,611.04x = 63,406,173.78
  5. Step 5: Solve for x
    x = 63,406,173.78/8,611.04
  6. Step 6: Final answer
    x = 7,363.36

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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.