Home / 1,339.20-1,994.76-1,276.02

Finding the Fourth Proportional to 1,339.20, 1,994.76 and 1,276.02

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Solution

The fourth proportional to 1,339.20, 1,994.76 and 1,276.02 is: 1,900.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.20 : 1,994.76 = 1,276.02 : x
  2. Step 2: Convert to fraction form
    1,339.20/1,994.76 = 1,276.02/x
  3. Step 3: Cross multiply
    1,339.20x = 1,994.76 × 1,276.02
  4. Step 4: Simplify right side
    1,339.20x = 2,545,353.66
  5. Step 5: Solve for x
    x = 2,545,353.66/1,339.20
  6. Step 6: Final answer
    x = 1,900.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.