Home / 3,245.10-4,478.32-1,986.13

Finding the Fourth Proportional to 3,245.10, 4,478.32 and 1,986.13

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Solution

The fourth proportional to 3,245.10, 4,478.32 and 1,986.13 is: 2,740.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,245.10 : 4,478.32 = 1,986.13 : x
  2. Step 2: Convert to fraction form
    3,245.10/4,478.32 = 1,986.13/x
  3. Step 3: Cross multiply
    3,245.10x = 4,478.32 × 1,986.13
  4. Step 4: Simplify right side
    3,245.10x = 8,894,519.47
  5. Step 5: Solve for x
    x = 8,894,519.47/3,245.10
  6. Step 6: Final answer
    x = 2,740.91

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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.