Home / 8,712.87-12,022.20-5,176.95

Finding the Fourth Proportional to 8,712.87, 12,022.20 and 5,176.95

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Solution

The fourth proportional to 8,712.87, 12,022.20 and 5,176.95 is: 7,143.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.87 : 12,022.20 = 5,176.95 : x
  2. Step 2: Convert to fraction form
    8,712.87/12,022.20 = 5,176.95/x
  3. Step 3: Cross multiply
    8,712.87x = 12,022.20 × 5,176.95
  4. Step 4: Simplify right side
    8,712.87x = 62,238,328.29
  5. Step 5: Solve for x
    x = 62,238,328.29/8,712.87
  6. Step 6: Final answer
    x = 7,143.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.