Home / 6,319.38-8,721.48-3,631.56

Finding the Fourth Proportional to 6,319.38, 8,721.48 and 3,631.56

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Solution

The fourth proportional to 6,319.38, 8,721.48 and 3,631.56 is: 5,011.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.38 : 8,721.48 = 3,631.56 : x
  2. Step 2: Convert to fraction form
    6,319.38/8,721.48 = 3,631.56/x
  3. Step 3: Cross multiply
    6,319.38x = 8,721.48 × 3,631.56
  4. Step 4: Simplify right side
    6,319.38x = 31,672,577.91
  5. Step 5: Solve for x
    x = 31,672,577.91/6,319.38
  6. Step 6: Final answer
    x = 5,011.98

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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.