Home / 7,215.83-10,821.76-2,471.92

Finding the Fourth Proportional to 7,215.83, 10,821.76 and 2,471.92

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Solution

The fourth proportional to 7,215.83, 10,821.76 and 2,471.92 is: 3,707.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.83 : 10,821.76 = 2,471.92 : x
  2. Step 2: Convert to fraction form
    7,215.83/10,821.76 = 2,471.92/x
  3. Step 3: Cross multiply
    7,215.83x = 10,821.76 × 2,471.92
  4. Step 4: Simplify right side
    7,215.83x = 26,750,491.75
  5. Step 5: Solve for x
    x = 26,750,491.75/7,215.83
  6. Step 6: Final answer
    x = 3,707.20

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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.