Home / 8,558.20-12,838.65-2,715.40

Finding the Fourth Proportional to 8,558.20, 12,838.65 and 2,715.40

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Solution

The fourth proportional to 8,558.20, 12,838.65 and 2,715.40 is: 4,073.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558.20 : 12,838.65 = 2,715.40 : x
  2. Step 2: Convert to fraction form
    8,558.20/12,838.65 = 2,715.40/x
  3. Step 3: Cross multiply
    8,558.20x = 12,838.65 × 2,715.40
  4. Step 4: Simplify right side
    8,558.20x = 34,862,070.21
  5. Step 5: Solve for x
    x = 34,862,070.21/8,558.20
  6. Step 6: Final answer
    x = 4,073.53

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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.