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Finding the Fourth Proportional to 3,615.69, 4,990.14 and 2,043.75

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Solution

The fourth proportional to 3,615.69, 4,990.14 and 2,043.75 is: 2,820.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.69 : 4,990.14 = 2,043.75 : x
  2. Step 2: Convert to fraction form
    3,615.69/4,990.14 = 2,043.75/x
  3. Step 3: Cross multiply
    3,615.69x = 4,990.14 × 2,043.75
  4. Step 4: Simplify right side
    3,615.69x = 10,198,598.63
  5. Step 5: Solve for x
    x = 10,198,598.63/3,615.69
  6. Step 6: Final answer
    x = 2,820.65

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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.