Home / 5,320.28-7,980.24-1,424.66

Finding the Fourth Proportional to 5,320.28, 7,980.24 and 1,424.66

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Solution

The fourth proportional to 5,320.28, 7,980.24 and 1,424.66 is: 2,136.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.28 : 7,980.24 = 1,424.66 : x
  2. Step 2: Convert to fraction form
    5,320.28/7,980.24 = 1,424.66/x
  3. Step 3: Cross multiply
    5,320.28x = 7,980.24 × 1,424.66
  4. Step 4: Simplify right side
    5,320.28x = 11,369,128.72
  5. Step 5: Solve for x
    x = 11,369,128.72/5,320.28
  6. Step 6: Final answer
    x = 2,136.94

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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.