Home / 7,042.28-9,717.96-3,898.28

Finding the Fourth Proportional to 7,042.28, 9,717.96 and 3,898.28

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Solution

The fourth proportional to 7,042.28, 9,717.96 and 3,898.28 is: 5,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.28 : 9,717.96 = 3,898.28 : x
  2. Step 2: Convert to fraction form
    7,042.28/9,717.96 = 3,898.28/x
  3. Step 3: Cross multiply
    7,042.28x = 9,717.96 × 3,898.28
  4. Step 4: Simplify right side
    7,042.28x = 37,883,329.11
  5. Step 5: Solve for x
    x = 37,883,329.11/7,042.28
  6. Step 6: Final answer
    x = 5,379.41

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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.