Home / 9,138.06-12,591.79-7,013.48

Finding the Fourth Proportional to 9,138.06, 12,591.79 and 7,013.48

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Solution

The fourth proportional to 9,138.06, 12,591.79 and 7,013.48 is: 9,664.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.06 : 12,591.79 = 7,013.48 : x
  2. Step 2: Convert to fraction form
    9,138.06/12,591.79 = 7,013.48/x
  3. Step 3: Cross multiply
    9,138.06x = 12,591.79 × 7,013.48
  4. Step 4: Simplify right side
    9,138.06x = 88,312,186.84
  5. Step 5: Solve for x
    x = 88,312,186.84/9,138.06
  6. Step 6: Final answer
    x = 9,664.22

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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.