Home / 2,387.18-3,289.77-1,722.84

Finding the Fourth Proportional to 2,387.18, 3,289.77 and 1,722.84

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Solution

The fourth proportional to 2,387.18, 3,289.77 and 1,722.84 is: 2,374.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.18 : 3,289.77 = 1,722.84 : x
  2. Step 2: Convert to fraction form
    2,387.18/3,289.77 = 1,722.84/x
  3. Step 3: Cross multiply
    2,387.18x = 3,289.77 × 1,722.84
  4. Step 4: Simplify right side
    2,387.18x = 5,667,747.35
  5. Step 5: Solve for x
    x = 5,667,747.35/2,387.18
  6. Step 6: Final answer
    x = 2,374.25

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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.