Home / 5,187.24-7,781.94-1,724.76

Finding the Fourth Proportional to 5,187.24, 7,781.94 and 1,724.76

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Solution

The fourth proportional to 5,187.24, 7,781.94 and 1,724.76 is: 2,587.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.24 : 7,781.94 = 1,724.76 : x
  2. Step 2: Convert to fraction form
    5,187.24/7,781.94 = 1,724.76/x
  3. Step 3: Cross multiply
    5,187.24x = 7,781.94 × 1,724.76
  4. Step 4: Simplify right side
    5,187.24x = 13,421,978.83
  5. Step 5: Solve for x
    x = 13,421,978.83/5,187.24
  6. Step 6: Final answer
    x = 2,587.50

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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.