Home / 1,924.72-2,886.48-1,278.88

Finding the Fourth Proportional to 1,924.72, 2,886.48 and 1,278.88

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Solution

The fourth proportional to 1,924.72, 2,886.48 and 1,278.88 is: 1,917.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,924.72 : 2,886.48 = 1,278.88 : x
  2. Step 2: Convert to fraction form
    1,924.72/2,886.48 = 1,278.88/x
  3. Step 3: Cross multiply
    1,924.72x = 2,886.48 × 1,278.88
  4. Step 4: Simplify right side
    1,924.72x = 3,691,461.54
  5. Step 5: Solve for x
    x = 3,691,461.54/1,924.72
  6. Step 6: Final answer
    x = 1,917.92

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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.