Home / 5,456.57-8,186.13-1,561.01

Finding the Fourth Proportional to 5,456.57, 8,186.13 and 1,561.01

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Solution

The fourth proportional to 5,456.57, 8,186.13 and 1,561.01 is: 2,341.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.57 : 8,186.13 = 1,561.01 : x
  2. Step 2: Convert to fraction form
    5,456.57/8,186.13 = 1,561.01/x
  3. Step 3: Cross multiply
    5,456.57x = 8,186.13 × 1,561.01
  4. Step 4: Simplify right side
    5,456.57x = 12,778,589.86
  5. Step 5: Solve for x
    x = 12,778,589.86/5,456.57
  6. Step 6: Final answer
    x = 2,341.87

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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.