Home / 2,378.08-3,281.68-1,315.92

Finding the Fourth Proportional to 2,378.08, 3,281.68 and 1,315.92

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Solution

The fourth proportional to 2,378.08, 3,281.68 and 1,315.92 is: 1,815.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.08 : 3,281.68 = 1,315.92 : x
  2. Step 2: Convert to fraction form
    2,378.08/3,281.68 = 1,315.92/x
  3. Step 3: Cross multiply
    2,378.08x = 3,281.68 × 1,315.92
  4. Step 4: Simplify right side
    2,378.08x = 4,318,428.35
  5. Step 5: Solve for x
    x = 4,318,428.35/2,378.08
  6. Step 6: Final answer
    x = 1,815.93

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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.