Home / 5,280.12-7,920.27-1,384.38

Finding the Fourth Proportional to 5,280.12, 7,920.27 and 1,384.38

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Solution

The fourth proportional to 5,280.12, 7,920.27 and 1,384.38 is: 2,076.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.12 : 7,920.27 = 1,384.38 : x
  2. Step 2: Convert to fraction form
    5,280.12/7,920.27 = 1,384.38/x
  3. Step 3: Cross multiply
    5,280.12x = 7,920.27 × 1,384.38
  4. Step 4: Simplify right side
    5,280.12x = 10,964,663.38
  5. Step 5: Solve for x
    x = 10,964,663.38/5,280.12
  6. Step 6: Final answer
    x = 2,076.59

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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.