Home / 3,478.31-5,218.32-1,013.15

Finding the Fourth Proportional to 3,478.31, 5,218.32 and 1,013.15

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Solution

The fourth proportional to 3,478.31, 5,218.32 and 1,013.15 is: 1,519.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.31 : 5,218.32 = 1,013.15 : x
  2. Step 2: Convert to fraction form
    3,478.31/5,218.32 = 1,013.15/x
  3. Step 3: Cross multiply
    3,478.31x = 5,218.32 × 1,013.15
  4. Step 4: Simplify right side
    3,478.31x = 5,286,927.86
  5. Step 5: Solve for x
    x = 5,286,927.86/3,478.31
  6. Step 6: Final answer
    x = 1,519.97

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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.