Home / 3,937.88-5,434.28-2,145.35

Finding the Fourth Proportional to 3,937.88, 5,434.28 and 2,145.35

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Solution

The fourth proportional to 3,937.88, 5,434.28 and 2,145.35 is: 2,960.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.88 : 5,434.28 = 2,145.35 : x
  2. Step 2: Convert to fraction form
    3,937.88/5,434.28 = 2,145.35/x
  3. Step 3: Cross multiply
    3,937.88x = 5,434.28 × 2,145.35
  4. Step 4: Simplify right side
    3,937.88x = 11,658,432.60
  5. Step 5: Solve for x
    x = 11,658,432.60/3,937.88
  6. Step 6: Final answer
    x = 2,960.59

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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.