Home / 7,118.38-9,823.56-3,974.77

Finding the Fourth Proportional to 7,118.38, 9,823.56 and 3,974.77

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Solution

The fourth proportional to 7,118.38, 9,823.56 and 3,974.77 is: 5,485.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.38 : 9,823.56 = 3,974.77 : x
  2. Step 2: Convert to fraction form
    7,118.38/9,823.56 = 3,974.77/x
  3. Step 3: Cross multiply
    7,118.38x = 9,823.56 × 3,974.77
  4. Step 4: Simplify right side
    7,118.38x = 39,046,342.46
  5. Step 5: Solve for x
    x = 39,046,342.46/7,118.38
  6. Step 6: Final answer
    x = 5,485.29

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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.