Home / 9,215.56-13,820.50-2,639.98

Finding the Fourth Proportional to 9,215.56, 13,820.50 and 2,639.98

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Solution

The fourth proportional to 9,215.56, 13,820.50 and 2,639.98 is: 3,959.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.56 : 13,820.50 = 2,639.98 : x
  2. Step 2: Convert to fraction form
    9,215.56/13,820.50 = 2,639.98/x
  3. Step 3: Cross multiply
    9,215.56x = 13,820.50 × 2,639.98
  4. Step 4: Simplify right side
    9,215.56x = 36,485,843.59
  5. Step 5: Solve for x
    x = 36,485,843.59/9,215.56
  6. Step 6: Final answer
    x = 3,959.16

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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.