Home / 2,378.10-3,281.31-1,329.96

Finding the Fourth Proportional to 2,378.10, 3,281.31 and 1,329.96

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Solution

The fourth proportional to 2,378.10, 3,281.31 and 1,329.96 is: 1,835.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.10 : 3,281.31 = 1,329.96 : x
  2. Step 2: Convert to fraction form
    2,378.10/3,281.31 = 1,329.96/x
  3. Step 3: Cross multiply
    2,378.10x = 3,281.31 × 1,329.96
  4. Step 4: Simplify right side
    2,378.10x = 4,364,011.05
  5. Step 5: Solve for x
    x = 4,364,011.05/2,378.10
  6. Step 6: Final answer
    x = 1,835.08

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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.