Home / 6,870.60-10,306.48-2,191.28

Finding the Fourth Proportional to 6,870.60, 10,306.48 and 2,191.28

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Solution

The fourth proportional to 6,870.60, 10,306.48 and 2,191.28 is: 3,287.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.60 : 10,306.48 = 2,191.28 : x
  2. Step 2: Convert to fraction form
    6,870.60/10,306.48 = 2,191.28/x
  3. Step 3: Cross multiply
    6,870.60x = 10,306.48 × 2,191.28
  4. Step 4: Simplify right side
    6,870.60x = 22,584,383.49
  5. Step 5: Solve for x
    x = 22,584,383.49/6,870.60
  6. Step 6: Final answer
    x = 3,287.10

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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.