Home / 9,186.68-12,679.88-5,210.12

Finding the Fourth Proportional to 9,186.68, 12,679.88 and 5,210.12

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Solution

The fourth proportional to 9,186.68, 12,679.88 and 5,210.12 is: 7,191.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,186.68 : 12,679.88 = 5,210.12 : x
  2. Step 2: Convert to fraction form
    9,186.68/12,679.88 = 5,210.12/x
  3. Step 3: Cross multiply
    9,186.68x = 12,679.88 × 5,210.12
  4. Step 4: Simplify right side
    9,186.68x = 66,063,702.03
  5. Step 5: Solve for x
    x = 66,063,702.03/9,186.68
  6. Step 6: Final answer
    x = 7,191.25

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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.