Home / 3,925.30-5,416.92-2,156.88

Finding the Fourth Proportional to 3,925.30, 5,416.92 and 2,156.88

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Solution

The fourth proportional to 3,925.30, 5,416.92 and 2,156.88 is: 2,976.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.30 : 5,416.92 = 2,156.88 : x
  2. Step 2: Convert to fraction form
    3,925.30/5,416.92 = 2,156.88/x
  3. Step 3: Cross multiply
    3,925.30x = 5,416.92 × 2,156.88
  4. Step 4: Simplify right side
    3,925.30x = 11,683,646.41
  5. Step 5: Solve for x
    x = 11,683,646.41/3,925.30
  6. Step 6: Final answer
    x = 2,976.50

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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.