Home / 3,925.98-5,418.20-2,157.93

Finding the Fourth Proportional to 3,925.98, 5,418.20 and 2,157.93

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Solution

The fourth proportional to 3,925.98, 5,418.20 and 2,157.93 is: 2,978.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.98 : 5,418.20 = 2,157.93 : x
  2. Step 2: Convert to fraction form
    3,925.98/5,418.20 = 2,157.93/x
  3. Step 3: Cross multiply
    3,925.98x = 5,418.20 × 2,157.93
  4. Step 4: Simplify right side
    3,925.98x = 11,692,122.04
  5. Step 5: Solve for x
    x = 11,692,122.04/3,925.98
  6. Step 6: Final answer
    x = 2,978.14

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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.