Home / 2,318.58-3,479.45-931.95

Finding the Fourth Proportional to 2,318.58, 3,479.45 and 931.95

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Solution

The fourth proportional to 2,318.58, 3,479.45 and 931.95 is: 1,398.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.58 : 3,479.45 = 931.95 : x
  2. Step 2: Convert to fraction form
    2,318.58/3,479.45 = 931.95/x
  3. Step 3: Cross multiply
    2,318.58x = 3,479.45 × 931.95
  4. Step 4: Simplify right side
    2,318.58x = 3,242,668.77
  5. Step 5: Solve for x
    x = 3,242,668.77/2,318.58
  6. Step 6: Final answer
    x = 1,398.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.