Home / 1,925.52-2,886.12-1,378.74

Finding the Fourth Proportional to 1,925.52, 2,886.12 and 1,378.74

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Solution

The fourth proportional to 1,925.52, 2,886.12 and 1,378.74 is: 2,066.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,925.52 : 2,886.12 = 1,378.74 : x
  2. Step 2: Convert to fraction form
    1,925.52/2,886.12 = 1,378.74/x
  3. Step 3: Cross multiply
    1,925.52x = 2,886.12 × 1,378.74
  4. Step 4: Simplify right side
    1,925.52x = 3,979,209.09
  5. Step 5: Solve for x
    x = 3,979,209.09/1,925.52
  6. Step 6: Final answer
    x = 2,066.56

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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.