Home / 7,217.12-9,959.92-4,074.08

Finding the Fourth Proportional to 7,217.12, 9,959.92 and 4,074.08

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Solution

The fourth proportional to 7,217.12, 9,959.92 and 4,074.08 is: 5,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,217.12 : 9,959.92 = 4,074.08 : x
  2. Step 2: Convert to fraction form
    7,217.12/9,959.92 = 4,074.08/x
  3. Step 3: Cross multiply
    7,217.12x = 9,959.92 × 4,074.08
  4. Step 4: Simplify right side
    7,217.12x = 40,577,510.87
  5. Step 5: Solve for x
    x = 40,577,510.87/7,217.12
  6. Step 6: Final answer
    x = 5,622.40

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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.