Home / 8,445.12-11,658.34-5,617.20

Finding the Fourth Proportional to 8,445.12, 11,658.34 and 5,617.20

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Solution

The fourth proportional to 8,445.12, 11,658.34 and 5,617.20 is: 7,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.12 : 11,658.34 = 5,617.20 : x
  2. Step 2: Convert to fraction form
    8,445.12/11,658.34 = 5,617.20/x
  3. Step 3: Cross multiply
    8,445.12x = 11,658.34 × 5,617.20
  4. Step 4: Simplify right side
    8,445.12x = 65,487,227.45
  5. Step 5: Solve for x
    x = 65,487,227.45/8,445.12
  6. Step 6: Final answer
    x = 7,754.45

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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.