Home / 5,280.38-7,921.01-1,384.75

Finding the Fourth Proportional to 5,280.38, 7,921.01 and 1,384.75

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Solution

The fourth proportional to 5,280.38, 7,921.01 and 1,384.75 is: 2,077.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.38 : 7,921.01 = 1,384.75 : x
  2. Step 2: Convert to fraction form
    5,280.38/7,921.01 = 1,384.75/x
  3. Step 3: Cross multiply
    5,280.38x = 7,921.01 × 1,384.75
  4. Step 4: Simplify right side
    5,280.38x = 10,968,618.60
  5. Step 5: Solve for x
    x = 10,968,618.60/5,280.38
  6. Step 6: Final answer
    x = 2,077.24

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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.