Home / 8,812.74-12,160.68-5,275.86

Finding the Fourth Proportional to 8,812.74, 12,160.68 and 5,275.86

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Solution

The fourth proportional to 8,812.74, 12,160.68 and 5,275.86 is: 7,280.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.74 : 12,160.68 = 5,275.86 : x
  2. Step 2: Convert to fraction form
    8,812.74/12,160.68 = 5,275.86/x
  3. Step 3: Cross multiply
    8,812.74x = 12,160.68 × 5,275.86
  4. Step 4: Simplify right side
    8,812.74x = 64,158,045.18
  5. Step 5: Solve for x
    x = 64,158,045.18/8,812.74
  6. Step 6: Final answer
    x = 7,280.15

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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.