Home / 5,280.12-7,909.20-2,509.20

Finding the Fourth Proportional to 5,280.12, 7,909.20 and 2,509.20

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Solution

The fourth proportional to 5,280.12, 7,909.20 and 2,509.20 is: 3,758.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.12 : 7,909.20 = 2,509.20 : x
  2. Step 2: Convert to fraction form
    5,280.12/7,909.20 = 2,509.20/x
  3. Step 3: Cross multiply
    5,280.12x = 7,909.20 × 2,509.20
  4. Step 4: Simplify right side
    5,280.12x = 19,845,764.64
  5. Step 5: Solve for x
    x = 19,845,764.64/5,280.12
  6. Step 6: Final answer
    x = 3,758.58

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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.