Home / 3,927.40-5,422.35-2,602.90

Finding the Fourth Proportional to 3,927.40, 5,422.35 and 2,602.90

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Solution

The fourth proportional to 3,927.40, 5,422.35 and 2,602.90 is: 3,593.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.40 : 5,422.35 = 2,602.90 : x
  2. Step 2: Convert to fraction form
    3,927.40/5,422.35 = 2,602.90/x
  3. Step 3: Cross multiply
    3,927.40x = 5,422.35 × 2,602.90
  4. Step 4: Simplify right side
    3,927.40x = 14,113,834.82
  5. Step 5: Solve for x
    x = 14,113,834.82/3,927.40
  6. Step 6: Final answer
    x = 3,593.68

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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.