Home / 3,925.13-5,416.80-2,156.87

Finding the Fourth Proportional to 3,925.13, 5,416.80 and 2,156.87

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Solution

The fourth proportional to 3,925.13, 5,416.80 and 2,156.87 is: 2,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.13 : 5,416.80 = 2,156.87 : x
  2. Step 2: Convert to fraction form
    3,925.13/5,416.80 = 2,156.87/x
  3. Step 3: Cross multiply
    3,925.13x = 5,416.80 × 2,156.87
  4. Step 4: Simplify right side
    3,925.13x = 11,683,333.42
  5. Step 5: Solve for x
    x = 11,683,333.42/3,925.13
  6. Step 6: Final answer
    x = 2,976.55

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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.