Home / 3,925.17-5,416.74-2,156.90

Finding the Fourth Proportional to 3,925.17, 5,416.74 and 2,156.90

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Solution

The fourth proportional to 3,925.17, 5,416.74 and 2,156.90 is: 2,976.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.17 : 5,416.74 = 2,156.90 : x
  2. Step 2: Convert to fraction form
    3,925.17/5,416.74 = 2,156.90/x
  3. Step 3: Cross multiply
    3,925.17x = 5,416.74 × 2,156.90
  4. Step 4: Simplify right side
    3,925.17x = 11,683,339.42
  5. Step 5: Solve for x
    x = 11,683,339.42/3,925.17
  6. Step 6: Final answer
    x = 2,976.52

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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.