Home / 8,987.44-12,401.77-5,211.83

Finding the Fourth Proportional to 8,987.44, 12,401.77 and 5,211.83

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Solution

The fourth proportional to 8,987.44, 12,401.77 and 5,211.83 is: 7,191.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.44 : 12,401.77 = 5,211.83 : x
  2. Step 2: Convert to fraction form
    8,987.44/12,401.77 = 5,211.83/x
  3. Step 3: Cross multiply
    8,987.44x = 12,401.77 × 5,211.83
  4. Step 4: Simplify right side
    8,987.44x = 64,635,916.94
  5. Step 5: Solve for x
    x = 64,635,916.94/8,987.44
  6. Step 6: Final answer
    x = 7,191.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.