Home / 3,678.75-5,073.18-2,420.88

Finding the Fourth Proportional to 3,678.75, 5,073.18 and 2,420.88

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Solution

The fourth proportional to 3,678.75, 5,073.18 and 2,420.88 is: 3,338.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.75 : 5,073.18 = 2,420.88 : x
  2. Step 2: Convert to fraction form
    3,678.75/5,073.18 = 2,420.88/x
  3. Step 3: Cross multiply
    3,678.75x = 5,073.18 × 2,420.88
  4. Step 4: Simplify right side
    3,678.75x = 12,281,560.00
  5. Step 5: Solve for x
    x = 12,281,560.00/3,678.75
  6. Step 6: Final answer
    x = 3,338.51

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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.