Home / 3,478.16-5,219-1,531.72

Finding the Fourth Proportional to 3,478.16, 5,219 and 1,531.72

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Solution

The fourth proportional to 3,478.16, 5,219 and 1,531.72 is: 2,298.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.16 : 5,219 = 1,531.72 : x
  2. Step 2: Convert to fraction form
    3,478.16/5,219 = 1,531.72/x
  3. Step 3: Cross multiply
    3,478.16x = 5,219 × 1,531.72
  4. Step 4: Simplify right side
    3,478.16x = 7,994,046.68
  5. Step 5: Solve for x
    x = 7,994,046.68/3,478.16
  6. Step 6: Final answer
    x = 2,298.36

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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.