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Finding the Fourth Proportional to 8,580.47, 12,808.55 and 7,417.95

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Solution

The fourth proportional to 8,580.47, 12,808.55 and 7,417.95 is: 11,073.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,580.47 : 12,808.55 = 7,417.95 : x
  2. Step 2: Convert to fraction form
    8,580.47/12,808.55 = 7,417.95/x
  3. Step 3: Cross multiply
    8,580.47x = 12,808.55 × 7,417.95
  4. Step 4: Simplify right side
    8,580.47x = 95,013,153.99
  5. Step 5: Solve for x
    x = 95,013,153.99/8,580.47
  6. Step 6: Final answer
    x = 11,073.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.