Home / 3,478.86-5,219.19-1,013.58

Finding the Fourth Proportional to 3,478.86, 5,219.19 and 1,013.58

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Solution

The fourth proportional to 3,478.86, 5,219.19 and 1,013.58 is: 1,520.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.86 : 5,219.19 = 1,013.58 : x
  2. Step 2: Convert to fraction form
    3,478.86/5,219.19 = 1,013.58/x
  3. Step 3: Cross multiply
    3,478.86x = 5,219.19 × 1,013.58
  4. Step 4: Simplify right side
    3,478.86x = 5,290,066.60
  5. Step 5: Solve for x
    x = 5,290,066.60/3,478.86
  6. Step 6: Final answer
    x = 1,520.63

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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.