Home / 5,280.13-7,919.88-1,384.53

Finding the Fourth Proportional to 5,280.13, 7,919.88 and 1,384.53

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Solution

The fourth proportional to 5,280.13, 7,919.88 and 1,384.53 is: 2,076.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.13 : 7,919.88 = 1,384.53 : x
  2. Step 2: Convert to fraction form
    5,280.13/7,919.88 = 1,384.53/x
  3. Step 3: Cross multiply
    5,280.13x = 7,919.88 × 1,384.53
  4. Step 4: Simplify right side
    5,280.13x = 10,965,311.46
  5. Step 5: Solve for x
    x = 10,965,311.46/5,280.13
  6. Step 6: Final answer
    x = 2,076.71

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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.