Home / 7,421.68-11,132.70-2,491.48

Finding the Fourth Proportional to 7,421.68, 11,132.70 and 2,491.48

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Solution

The fourth proportional to 7,421.68, 11,132.70 and 2,491.48 is: 3,737.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.68 : 11,132.70 = 2,491.48 : x
  2. Step 2: Convert to fraction form
    7,421.68/11,132.70 = 2,491.48/x
  3. Step 3: Cross multiply
    7,421.68x = 11,132.70 × 2,491.48
  4. Step 4: Simplify right side
    7,421.68x = 27,736,899.40
  5. Step 5: Solve for x
    x = 27,736,899.40/7,421.68
  6. Step 6: Final answer
    x = 3,737.28

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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.