Home / 8,389.19-12,578.25-4,691.81

Finding the Fourth Proportional to 8,389.19, 12,578.25 and 4,691.81

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Solution

The fourth proportional to 8,389.19, 12,578.25 and 4,691.81 is: 7,034.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.19 : 12,578.25 = 4,691.81 : x
  2. Step 2: Convert to fraction form
    8,389.19/12,578.25 = 4,691.81/x
  3. Step 3: Cross multiply
    8,389.19x = 12,578.25 × 4,691.81
  4. Step 4: Simplify right side
    8,389.19x = 59,014,759.13
  5. Step 5: Solve for x
    x = 59,014,759.13/8,389.19
  6. Step 6: Final answer
    x = 7,034.62

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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.