Home / 3,921.40-5,410.56-2,219.93

Finding the Fourth Proportional to 3,921.40, 5,410.56 and 2,219.93

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Solution

The fourth proportional to 3,921.40, 5,410.56 and 2,219.93 is: 3,062.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.40 : 5,410.56 = 2,219.93 : x
  2. Step 2: Convert to fraction form
    3,921.40/5,410.56 = 2,219.93/x
  3. Step 3: Cross multiply
    3,921.40x = 5,410.56 × 2,219.93
  4. Step 4: Simplify right side
    3,921.40x = 12,011,064.46
  5. Step 5: Solve for x
    x = 12,011,064.46/3,921.40
  6. Step 6: Final answer
    x = 3,062.95

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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.