Home / 7,218.77-9,961.18-4,074.35

Finding the Fourth Proportional to 7,218.77, 9,961.18 and 4,074.35

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Solution

The fourth proportional to 7,218.77, 9,961.18 and 4,074.35 is: 5,622.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.77 : 9,961.18 = 4,074.35 : x
  2. Step 2: Convert to fraction form
    7,218.77/9,961.18 = 4,074.35/x
  3. Step 3: Cross multiply
    7,218.77x = 9,961.18 × 4,074.35
  4. Step 4: Simplify right side
    7,218.77x = 40,585,273.74
  5. Step 5: Solve for x
    x = 40,585,273.74/7,218.77
  6. Step 6: Final answer
    x = 5,622.19

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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.