Home / 6,631.36-9,148.20-3,974.15

Finding the Fourth Proportional to 6,631.36, 9,148.20 and 3,974.15

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Solution

The fourth proportional to 6,631.36, 9,148.20 and 3,974.15 is: 5,482.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,631.36 : 9,148.20 = 3,974.15 : x
  2. Step 2: Convert to fraction form
    6,631.36/9,148.20 = 3,974.15/x
  3. Step 3: Cross multiply
    6,631.36x = 9,148.20 × 3,974.15
  4. Step 4: Simplify right side
    6,631.36x = 36,356,319.03
  5. Step 5: Solve for x
    x = 36,356,319.03/6,631.36
  6. Step 6: Final answer
    x = 5,482.48

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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.