Home / 5,280.05-7,920.08-2,159.52

Finding the Fourth Proportional to 5,280.05, 7,920.08 and 2,159.52

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Solution

The fourth proportional to 5,280.05, 7,920.08 and 2,159.52 is: 3,239.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.05 : 7,920.08 = 2,159.52 : x
  2. Step 2: Convert to fraction form
    5,280.05/7,920.08 = 2,159.52/x
  3. Step 3: Cross multiply
    5,280.05x = 7,920.08 × 2,159.52
  4. Step 4: Simplify right side
    5,280.05x = 17,103,538.76
  5. Step 5: Solve for x
    x = 17,103,538.76/5,280.05
  6. Step 6: Final answer
    x = 3,239.27

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1.5x scale

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.