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Finding the Fourth Proportional to 8,685.32, 13,030.32 and 3,137

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Solution

The fourth proportional to 8,685.32, 13,030.32 and 3,137 is: 4,706.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.32 : 13,030.32 = 3,137 : x
  2. Step 2: Convert to fraction form
    8,685.32/13,030.32 = 3,137/x
  3. Step 3: Cross multiply
    8,685.32x = 13,030.32 × 3,137
  4. Step 4: Simplify right side
    8,685.32x = 40,876,113.84
  5. Step 5: Solve for x
    x = 40,876,113.84/8,685.32
  6. Step 6: Final answer
    x = 4,706.35

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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.