Home / 8,391.15-12,586.19-2,547.81

Finding the Fourth Proportional to 8,391.15, 12,586.19 and 2,547.81

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Solution

The fourth proportional to 8,391.15, 12,586.19 and 2,547.81 is: 3,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.15 : 12,586.19 = 2,547.81 : x
  2. Step 2: Convert to fraction form
    8,391.15/12,586.19 = 2,547.81/x
  3. Step 3: Cross multiply
    8,391.15x = 12,586.19 × 2,547.81
  4. Step 4: Simplify right side
    8,391.15x = 32,067,208.00
  5. Step 5: Solve for x
    x = 32,067,208.00/8,391.15
  6. Step 6: Final answer
    x = 3,821.55

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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.