Home / 7,021.17-9,689.76-3,877.92

Finding the Fourth Proportional to 7,021.17, 9,689.76 and 3,877.92

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Solution

The fourth proportional to 7,021.17, 9,689.76 and 3,877.92 is: 5,351.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.17 : 9,689.76 = 3,877.92 : x
  2. Step 2: Convert to fraction form
    7,021.17/9,689.76 = 3,877.92/x
  3. Step 3: Cross multiply
    7,021.17x = 9,689.76 × 3,877.92
  4. Step 4: Simplify right side
    7,021.17x = 37,576,114.10
  5. Step 5: Solve for x
    x = 37,576,114.10/7,021.17
  6. Step 6: Final answer
    x = 5,351.83

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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.