Home / 3,925.04-5,416.98-2,156.78

Finding the Fourth Proportional to 3,925.04, 5,416.98 and 2,156.78

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Solution

The fourth proportional to 3,925.04, 5,416.98 and 2,156.78 is: 2,976.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.04 : 5,416.98 = 2,156.78 : x
  2. Step 2: Convert to fraction form
    3,925.04/5,416.98 = 2,156.78/x
  3. Step 3: Cross multiply
    3,925.04x = 5,416.98 × 2,156.78
  4. Step 4: Simplify right side
    3,925.04x = 11,683,234.12
  5. Step 5: Solve for x
    x = 11,683,234.12/3,925.04
  6. Step 6: Final answer
    x = 2,976.59

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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.