Home / 7,972.78-11,959.16-2,775

Finding the Fourth Proportional to 7,972.78, 11,959.16 and 2,775

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Solution

The fourth proportional to 7,972.78, 11,959.16 and 2,775 is: 4,162.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.78 : 11,959.16 = 2,775 : x
  2. Step 2: Convert to fraction form
    7,972.78/11,959.16 = 2,775/x
  3. Step 3: Cross multiply
    7,972.78x = 11,959.16 × 2,775
  4. Step 4: Simplify right side
    7,972.78x = 33,186,669
  5. Step 5: Solve for x
    x = 33,186,669/7,972.78
  6. Step 6: Final answer
    x = 4,162.50

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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.