Home / 2,378.15-3,281.32-1,383.52

Finding the Fourth Proportional to 2,378.15, 3,281.32 and 1,383.52

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Solution

The fourth proportional to 2,378.15, 3,281.32 and 1,383.52 is: 1,908.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.15 : 3,281.32 = 1,383.52 : x
  2. Step 2: Convert to fraction form
    2,378.15/3,281.32 = 1,383.52/x
  3. Step 3: Cross multiply
    2,378.15x = 3,281.32 × 1,383.52
  4. Step 4: Simplify right side
    2,378.15x = 4,539,748.52
  5. Step 5: Solve for x
    x = 4,539,748.52/2,378.15
  6. Step 6: Final answer
    x = 1,908.94

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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.