Home / 3,988.46-5,501.72-2,728.88

Finding the Fourth Proportional to 3,988.46, 5,501.72 and 2,728.88

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Solution

The fourth proportional to 3,988.46, 5,501.72 and 2,728.88 is: 3,764.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.46 : 5,501.72 = 2,728.88 : x
  2. Step 2: Convert to fraction form
    3,988.46/5,501.72 = 2,728.88/x
  3. Step 3: Cross multiply
    3,988.46x = 5,501.72 × 2,728.88
  4. Step 4: Simplify right side
    3,988.46x = 15,013,533.67
  5. Step 5: Solve for x
    x = 15,013,533.67/3,988.46
  6. Step 6: Final answer
    x = 3,764.24

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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.