Home / 9,215.55-13,820.88-2,639.97

Finding the Fourth Proportional to 9,215.55, 13,820.88 and 2,639.97

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Solution

The fourth proportional to 9,215.55, 13,820.88 and 2,639.97 is: 3,959.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.55 : 13,820.88 = 2,639.97 : x
  2. Step 2: Convert to fraction form
    9,215.55/13,820.88 = 2,639.97/x
  3. Step 3: Cross multiply
    9,215.55x = 13,820.88 × 2,639.97
  4. Step 4: Simplify right side
    9,215.55x = 36,486,708.57
  5. Step 5: Solve for x
    x = 36,486,708.57/9,215.55
  6. Step 6: Final answer
    x = 3,959.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.