Home / 5,280-7,919.94-4,959.24

Finding the Fourth Proportional to 5,280, 7,919.94 and 4,959.24

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Solution

The fourth proportional to 5,280, 7,919.94 and 4,959.24 is: 7,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280 : 7,919.94 = 4,959.24 : x
  2. Step 2: Convert to fraction form
    5,280/7,919.94 = 4,959.24/x
  3. Step 3: Cross multiply
    5,280x = 7,919.94 × 4,959.24
  4. Step 4: Simplify right side
    5,280x = 39,276,883.25
  5. Step 5: Solve for x
    x = 39,276,883.25/5,280
  6. Step 6: Final answer
    x = 7,438.80

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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.