Home / 8,442.66-12,615.90-6,320.55

Finding the Fourth Proportional to 8,442.66, 12,615.90 and 6,320.55

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Solution

The fourth proportional to 8,442.66, 12,615.90 and 6,320.55 is: 9,444.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.66 : 12,615.90 = 6,320.55 : x
  2. Step 2: Convert to fraction form
    8,442.66/12,615.90 = 6,320.55/x
  3. Step 3: Cross multiply
    8,442.66x = 12,615.90 × 6,320.55
  4. Step 4: Simplify right side
    8,442.66x = 79,739,426.75
  5. Step 5: Solve for x
    x = 79,739,426.75/8,442.66
  6. Step 6: Final answer
    x = 9,444.82

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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.