Home / 2,354.78-3,249.56-1,306.86

Finding the Fourth Proportional to 2,354.78, 3,249.56 and 1,306.86

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Solution

The fourth proportional to 2,354.78, 3,249.56 and 1,306.86 is: 1,803.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,354.78 : 3,249.56 = 1,306.86 : x
  2. Step 2: Convert to fraction form
    2,354.78/3,249.56 = 1,306.86/x
  3. Step 3: Cross multiply
    2,354.78x = 3,249.56 × 1,306.86
  4. Step 4: Simplify right side
    2,354.78x = 4,246,719.98
  5. Step 5: Solve for x
    x = 4,246,719.98/2,354.78
  6. Step 6: Final answer
    x = 1,803.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.