Home / 8,778.17-12,114.08-5,328.79

Finding the Fourth Proportional to 8,778.17, 12,114.08 and 5,328.79

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Solution

The fourth proportional to 8,778.17, 12,114.08 and 5,328.79 is: 7,353.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.17 : 12,114.08 = 5,328.79 : x
  2. Step 2: Convert to fraction form
    8,778.17/12,114.08 = 5,328.79/x
  3. Step 3: Cross multiply
    8,778.17x = 12,114.08 × 5,328.79
  4. Step 4: Simplify right side
    8,778.17x = 64,553,403.20
  5. Step 5: Solve for x
    x = 64,553,403.20/8,778.17
  6. Step 6: Final answer
    x = 7,353.86

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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.