Home / 3,615.12-4,989-2,043.12

Finding the Fourth Proportional to 3,615.12, 4,989 and 2,043.12

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Solution

The fourth proportional to 3,615.12, 4,989 and 2,043.12 is: 2,819.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.12 : 4,989 = 2,043.12 : x
  2. Step 2: Convert to fraction form
    3,615.12/4,989 = 2,043.12/x
  3. Step 3: Cross multiply
    3,615.12x = 4,989 × 2,043.12
  4. Step 4: Simplify right side
    3,615.12x = 10,193,125.68
  5. Step 5: Solve for x
    x = 10,193,125.68/3,615.12
  6. Step 6: Final answer
    x = 2,819.58

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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.