Home / 2,620.11-3,615.61-1,440.96

Finding the Fourth Proportional to 2,620.11, 3,615.61 and 1,440.96

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Solution

The fourth proportional to 2,620.11, 3,615.61 and 1,440.96 is: 1,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.11 : 3,615.61 = 1,440.96 : x
  2. Step 2: Convert to fraction form
    2,620.11/3,615.61 = 1,440.96/x
  3. Step 3: Cross multiply
    2,620.11x = 3,615.61 × 1,440.96
  4. Step 4: Simplify right side
    2,620.11x = 5,209,949.39
  5. Step 5: Solve for x
    x = 5,209,949.39/2,620.11
  6. Step 6: Final answer
    x = 1,988.45

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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.