Home / 1,923.86-2,654.68-1,215.44

Finding the Fourth Proportional to 1,923.86, 2,654.68 and 1,215.44

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Solution

The fourth proportional to 1,923.86, 2,654.68 and 1,215.44 is: 1,677.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,923.86 : 2,654.68 = 1,215.44 : x
  2. Step 2: Convert to fraction form
    1,923.86/2,654.68 = 1,215.44/x
  3. Step 3: Cross multiply
    1,923.86x = 2,654.68 × 1,215.44
  4. Step 4: Simplify right side
    1,923.86x = 3,226,604.26
  5. Step 5: Solve for x
    x = 3,226,604.26/1,923.86
  6. Step 6: Final answer
    x = 1,677.15

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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.