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Finding the Fourth Proportional to 8,358.63, 12,537.99 and 2,515.20

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Solution

The fourth proportional to 8,358.63, 12,537.99 and 2,515.20 is: 3,772.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.63 : 12,537.99 = 2,515.20 : x
  2. Step 2: Convert to fraction form
    8,358.63/12,537.99 = 2,515.20/x
  3. Step 3: Cross multiply
    8,358.63x = 12,537.99 × 2,515.20
  4. Step 4: Simplify right side
    8,358.63x = 31,535,552.45
  5. Step 5: Solve for x
    x = 31,535,552.45/8,358.63
  6. Step 6: Final answer
    x = 3,772.81

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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.