Home / 7,631.28-11,430.81-6,311.79

Finding the Fourth Proportional to 7,631.28, 11,430.81 and 6,311.79

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Solution

The fourth proportional to 7,631.28, 11,430.81 and 6,311.79 is: 9,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,631.28 : 11,430.81 = 6,311.79 : x
  2. Step 2: Convert to fraction form
    7,631.28/11,430.81 = 6,311.79/x
  3. Step 3: Cross multiply
    7,631.28x = 11,430.81 × 6,311.79
  4. Step 4: Simplify right side
    7,631.28x = 72,148,872.25
  5. Step 5: Solve for x
    x = 72,148,872.25/7,631.28
  6. Step 6: Final answer
    x = 9,454.36

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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.