Home / 8,631.89-12,947.84-3,698.33

Finding the Fourth Proportional to 8,631.89, 12,947.84 and 3,698.33

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Solution

The fourth proportional to 8,631.89, 12,947.84 and 3,698.33 is: 5,547.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.89 : 12,947.84 = 3,698.33 : x
  2. Step 2: Convert to fraction form
    8,631.89/12,947.84 = 3,698.33/x
  3. Step 3: Cross multiply
    8,631.89x = 12,947.84 × 3,698.33
  4. Step 4: Simplify right side
    8,631.89x = 47,885,301.88
  5. Step 5: Solve for x
    x = 47,885,301.88/8,631.89
  6. Step 6: Final answer
    x = 5,547.49

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Similar ratio
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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.