Home / 9,180.15-12,661.56-6,191.25

Finding the Fourth Proportional to 9,180.15, 12,661.56 and 6,191.25

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Solution

The fourth proportional to 9,180.15, 12,661.56 and 6,191.25 is: 8,539.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,180.15 : 12,661.56 = 6,191.25 : x
  2. Step 2: Convert to fraction form
    9,180.15/12,661.56 = 6,191.25/x
  3. Step 3: Cross multiply
    9,180.15x = 12,661.56 × 6,191.25
  4. Step 4: Simplify right side
    9,180.15x = 78,390,883.35
  5. Step 5: Solve for x
    x = 78,390,883.35/9,180.15
  6. Step 6: Final answer
    x = 8,539.17

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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.