Home / 3,615.38-4,989.53-2,290.12

Finding the Fourth Proportional to 3,615.38, 4,989.53 and 2,290.12

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Solution

The fourth proportional to 3,615.38, 4,989.53 and 2,290.12 is: 3,160.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.38 : 4,989.53 = 2,290.12 : x
  2. Step 2: Convert to fraction form
    3,615.38/4,989.53 = 2,290.12/x
  3. Step 3: Cross multiply
    3,615.38x = 4,989.53 × 2,290.12
  4. Step 4: Simplify right side
    3,615.38x = 11,426,598.52
  5. Step 5: Solve for x
    x = 11,426,598.52/3,615.38
  6. Step 6: Final answer
    x = 3,160.56

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Half scale
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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.