Home / 3,115.20-4,663.53-3,111.10

Finding the Fourth Proportional to 3,115.20, 4,663.53 and 3,111.10

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Solution

The fourth proportional to 3,115.20, 4,663.53 and 3,111.10 is: 4,657.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.20 : 4,663.53 = 3,111.10 : x
  2. Step 2: Convert to fraction form
    3,115.20/4,663.53 = 3,111.10/x
  3. Step 3: Cross multiply
    3,115.20x = 4,663.53 × 3,111.10
  4. Step 4: Simplify right side
    3,115.20x = 14,508,708.18
  5. Step 5: Solve for x
    x = 14,508,708.18/3,115.20
  6. Step 6: Final answer
    x = 4,657.39

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1.5x scale

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.