Home / 3,838.92-5,298.27-2,160.45

Finding the Fourth Proportional to 3,838.92, 5,298.27 and 2,160.45

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Solution

The fourth proportional to 3,838.92, 5,298.27 and 2,160.45 is: 2,981.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838.92 : 5,298.27 = 2,160.45 : x
  2. Step 2: Convert to fraction form
    3,838.92/5,298.27 = 2,160.45/x
  3. Step 3: Cross multiply
    3,838.92x = 5,298.27 × 2,160.45
  4. Step 4: Simplify right side
    3,838.92x = 11,446,647.42
  5. Step 5: Solve for x
    x = 11,446,647.42/3,838.92
  6. Step 6: Final answer
    x = 2,981.74

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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.