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Finding the Fourth Proportional to 8,418.80, 12,595.80 and 5,502.80

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Solution

The fourth proportional to 8,418.80, 12,595.80 and 5,502.80 is: 8,233.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.80 : 12,595.80 = 5,502.80 : x
  2. Step 2: Convert to fraction form
    8,418.80/12,595.80 = 5,502.80/x
  3. Step 3: Cross multiply
    8,418.80x = 12,595.80 × 5,502.80
  4. Step 4: Simplify right side
    8,418.80x = 69,312,168.24
  5. Step 5: Solve for x
    x = 69,312,168.24/8,418.80
  6. Step 6: Final answer
    x = 8,233.02

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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.