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Finding the Fourth Proportional to 8,611.14, 12,913.58 and 3,681.08

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Solution

The fourth proportional to 8,611.14, 12,913.58 and 3,681.08 is: 5,520.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.14 : 12,913.58 = 3,681.08 : x
  2. Step 2: Convert to fraction form
    8,611.14/12,913.58 = 3,681.08/x
  3. Step 3: Cross multiply
    8,611.14x = 12,913.58 × 3,681.08
  4. Step 4: Simplify right side
    8,611.14x = 47,535,921.07
  5. Step 5: Solve for x
    x = 47,535,921.07/8,611.14
  6. Step 6: Final answer
    x = 5,520.28

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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.