Home / 8,391.44-12,588.42-2,547.40

Finding the Fourth Proportional to 8,391.44, 12,588.42 and 2,547.40

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Solution

The fourth proportional to 8,391.44, 12,588.42 and 2,547.40 is: 3,821.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.44 : 12,588.42 = 2,547.40 : x
  2. Step 2: Convert to fraction form
    8,391.44/12,588.42 = 2,547.40/x
  3. Step 3: Cross multiply
    8,391.44x = 12,588.42 × 2,547.40
  4. Step 4: Simplify right side
    8,391.44x = 32,067,741.11
  5. Step 5: Solve for x
    x = 32,067,741.11/8,391.44
  6. Step 6: Final answer
    x = 3,821.48

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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.