Home / 4,319.82-6,479.78-1,398.15

Finding the Fourth Proportional to 4,319.82, 6,479.78 and 1,398.15

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Solution

The fourth proportional to 4,319.82, 6,479.78 and 1,398.15 is: 2,097.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,319.82 : 6,479.78 = 1,398.15 : x
  2. Step 2: Convert to fraction form
    4,319.82/6,479.78 = 1,398.15/x
  3. Step 3: Cross multiply
    4,319.82x = 6,479.78 × 1,398.15
  4. Step 4: Simplify right side
    4,319.82x = 9,059,697.42
  5. Step 5: Solve for x
    x = 9,059,697.42/4,319.82
  6. Step 6: Final answer
    x = 2,097.24

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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.