Home / 8,115.50-11,199.40-4,389.50

Finding the Fourth Proportional to 8,115.50, 11,199.40 and 4,389.50

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Solution

The fourth proportional to 8,115.50, 11,199.40 and 4,389.50 is: 6,057.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.50 : 11,199.40 = 4,389.50 : x
  2. Step 2: Convert to fraction form
    8,115.50/11,199.40 = 4,389.50/x
  3. Step 3: Cross multiply
    8,115.50x = 11,199.40 × 4,389.50
  4. Step 4: Simplify right side
    8,115.50x = 49,159,766.30
  5. Step 5: Solve for x
    x = 49,159,766.30/8,115.50
  6. Step 6: Final answer
    x = 6,057.52

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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.