Home / 7,788.72-11,680.92-2,165.10

Finding the Fourth Proportional to 7,788.72, 11,680.92 and 2,165.10

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Solution

The fourth proportional to 7,788.72, 11,680.92 and 2,165.10 is: 3,247.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.72 : 11,680.92 = 2,165.10 : x
  2. Step 2: Convert to fraction form
    7,788.72/11,680.92 = 2,165.10/x
  3. Step 3: Cross multiply
    7,788.72x = 11,680.92 × 2,165.10
  4. Step 4: Simplify right side
    7,788.72x = 25,290,359.89
  5. Step 5: Solve for x
    x = 25,290,359.89/7,788.72
  6. Step 6: Final answer
    x = 3,247.05

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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.