Home / 9,711.22-13,408.46-6,721.88

Finding the Fourth Proportional to 9,711.22, 13,408.46 and 6,721.88

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Solution

The fourth proportional to 9,711.22, 13,408.46 and 6,721.88 is: 9,281.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,711.22 : 13,408.46 = 6,721.88 : x
  2. Step 2: Convert to fraction form
    9,711.22/13,408.46 = 6,721.88/x
  3. Step 3: Cross multiply
    9,711.22x = 13,408.46 × 6,721.88
  4. Step 4: Simplify right side
    9,711.22x = 90,130,059.10
  5. Step 5: Solve for x
    x = 90,130,059.10/9,711.22
  6. Step 6: Final answer
    x = 9,281.02

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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.