Home / 3,977.74-5,490.84-2,902.60

Finding the Fourth Proportional to 3,977.74, 5,490.84 and 2,902.60

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Solution

The fourth proportional to 3,977.74, 5,490.84 and 2,902.60 is: 4,006.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.74 : 5,490.84 = 2,902.60 : x
  2. Step 2: Convert to fraction form
    3,977.74/5,490.84 = 2,902.60/x
  3. Step 3: Cross multiply
    3,977.74x = 5,490.84 × 2,902.60
  4. Step 4: Simplify right side
    3,977.74x = 15,937,712.18
  5. Step 5: Solve for x
    x = 15,937,712.18/3,977.74
  6. Step 6: Final answer
    x = 4,006.73

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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.