Home / 5,239.95-7,861.62-1,542.20

Finding the Fourth Proportional to 5,239.95, 7,861.62 and 1,542.20

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Solution

The fourth proportional to 5,239.95, 7,861.62 and 1,542.20 is: 2,313.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.95 : 7,861.62 = 1,542.20 : x
  2. Step 2: Convert to fraction form
    5,239.95/7,861.62 = 1,542.20/x
  3. Step 3: Cross multiply
    5,239.95x = 7,861.62 × 1,542.20
  4. Step 4: Simplify right side
    5,239.95x = 12,124,151.06
  5. Step 5: Solve for x
    x = 12,124,151.06/5,239.95
  6. Step 6: Final answer
    x = 2,313.79

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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.