Home / 5,419.12-7,479.16-3,911.66

Finding the Fourth Proportional to 5,419.12, 7,479.16 and 3,911.66

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Solution

The fourth proportional to 5,419.12, 7,479.16 and 3,911.66 is: 5,398.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.12 : 7,479.16 = 3,911.66 : x
  2. Step 2: Convert to fraction form
    5,419.12/7,479.16 = 3,911.66/x
  3. Step 3: Cross multiply
    5,419.12x = 7,479.16 × 3,911.66
  4. Step 4: Simplify right side
    5,419.12x = 29,255,883.83
  5. Step 5: Solve for x
    x = 29,255,883.83/5,419.12
  6. Step 6: Final answer
    x = 5,398.64

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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.