Home / 5,382.91-7,428.40-2,992.80

Finding the Fourth Proportional to 5,382.91, 7,428.40 and 2,992.80

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Solution

The fourth proportional to 5,382.91, 7,428.40 and 2,992.80 is: 4,130.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.91 : 7,428.40 = 2,992.80 : x
  2. Step 2: Convert to fraction form
    5,382.91/7,428.40 = 2,992.80/x
  3. Step 3: Cross multiply
    5,382.91x = 7,428.40 × 2,992.80
  4. Step 4: Simplify right side
    5,382.91x = 22,231,715.52
  5. Step 5: Solve for x
    x = 22,231,715.52/5,382.91
  6. Step 6: Final answer
    x = 4,130.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.