Home / 5,921.12-8,167.20-3,560.78

Finding the Fourth Proportional to 5,921.12, 8,167.20 and 3,560.78

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Solution

The fourth proportional to 5,921.12, 8,167.20 and 3,560.78 is: 4,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.12 : 8,167.20 = 3,560.78 : x
  2. Step 2: Convert to fraction form
    5,921.12/8,167.20 = 3,560.78/x
  3. Step 3: Cross multiply
    5,921.12x = 8,167.20 × 3,560.78
  4. Step 4: Simplify right side
    5,921.12x = 29,081,602.42
  5. Step 5: Solve for x
    x = 29,081,602.42/5,921.12
  6. Step 6: Final answer
    x = 4,911.50

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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.