Home / 6,631.50-9,947.26-3,118.92

Finding the Fourth Proportional to 6,631.50, 9,947.26 and 3,118.92

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Solution

The fourth proportional to 6,631.50, 9,947.26 and 3,118.92 is: 4,678.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,631.50 : 9,947.26 = 3,118.92 : x
  2. Step 2: Convert to fraction form
    6,631.50/9,947.26 = 3,118.92/x
  3. Step 3: Cross multiply
    6,631.50x = 9,947.26 × 3,118.92
  4. Step 4: Simplify right side
    6,631.50x = 31,024,708.16
  5. Step 5: Solve for x
    x = 31,024,708.16/6,631.50
  6. Step 6: Final answer
    x = 4,678.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.