Home / 8,285.88-12,428.52-3,908.16

Finding the Fourth Proportional to 8,285.88, 12,428.52 and 3,908.16

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Solution

The fourth proportional to 8,285.88, 12,428.52 and 3,908.16 is: 5,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,285.88 : 12,428.52 = 3,908.16 : x
  2. Step 2: Convert to fraction form
    8,285.88/12,428.52 = 3,908.16/x
  3. Step 3: Cross multiply
    8,285.88x = 12,428.52 × 3,908.16
  4. Step 4: Simplify right side
    8,285.88x = 48,572,644.72
  5. Step 5: Solve for x
    x = 48,572,644.72/8,285.88
  6. Step 6: Final answer
    x = 5,862.10

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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.