Home / 5,281.18-7,919.34-2,972.68

Finding the Fourth Proportional to 5,281.18, 7,919.34 and 2,972.68

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Solution

The fourth proportional to 5,281.18, 7,919.34 and 2,972.68 is: 4,457.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.18 : 7,919.34 = 2,972.68 : x
  2. Step 2: Convert to fraction form
    5,281.18/7,919.34 = 2,972.68/x
  3. Step 3: Cross multiply
    5,281.18x = 7,919.34 × 2,972.68
  4. Step 4: Simplify right side
    5,281.18x = 23,541,663.63
  5. Step 5: Solve for x
    x = 23,541,663.63/5,281.18
  6. Step 6: Final answer
    x = 4,457.65

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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.