Home / 7,039.12-10,561.50-2,657.82

Finding the Fourth Proportional to 7,039.12, 10,561.50 and 2,657.82

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Solution

The fourth proportional to 7,039.12, 10,561.50 and 2,657.82 is: 3,987.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.12 : 10,561.50 = 2,657.82 : x
  2. Step 2: Convert to fraction form
    7,039.12/10,561.50 = 2,657.82/x
  3. Step 3: Cross multiply
    7,039.12x = 10,561.50 × 2,657.82
  4. Step 4: Simplify right side
    7,039.12x = 28,070,565.93
  5. Step 5: Solve for x
    x = 28,070,565.93/7,039.12
  6. Step 6: Final answer
    x = 3,987.79

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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.