Home / 9,187.20-13,780.80-2,261.70

Finding the Fourth Proportional to 9,187.20, 13,780.80 and 2,261.70

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Solution

The fourth proportional to 9,187.20, 13,780.80 and 2,261.70 is: 3,392.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,187.20 : 13,780.80 = 2,261.70 : x
  2. Step 2: Convert to fraction form
    9,187.20/13,780.80 = 2,261.70/x
  3. Step 3: Cross multiply
    9,187.20x = 13,780.80 × 2,261.70
  4. Step 4: Simplify right side
    9,187.20x = 31,168,035.36
  5. Step 5: Solve for x
    x = 31,168,035.36/9,187.20
  6. Step 6: Final answer
    x = 3,392.55

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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.