Home / 9,631.20-13,281.66-6,439.08

Finding the Fourth Proportional to 9,631.20, 13,281.66 and 6,439.08

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Solution

The fourth proportional to 9,631.20, 13,281.66 and 6,439.08 is: 8,879.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,631.20 : 13,281.66 = 6,439.08 : x
  2. Step 2: Convert to fraction form
    9,631.20/13,281.66 = 6,439.08/x
  3. Step 3: Cross multiply
    9,631.20x = 13,281.66 × 6,439.08
  4. Step 4: Simplify right side
    9,631.20x = 85,521,671.27
  5. Step 5: Solve for x
    x = 85,521,671.27/9,631.20
  6. Step 6: Final answer
    x = 8,879.65

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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.