Home / 1,356.70-2,031.18-1,226.95

Finding the Fourth Proportional to 1,356.70, 2,031.18 and 1,226.95

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Solution

The fourth proportional to 1,356.70, 2,031.18 and 1,226.95 is: 1,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.70 : 2,031.18 = 1,226.95 : x
  2. Step 2: Convert to fraction form
    1,356.70/2,031.18 = 1,226.95/x
  3. Step 3: Cross multiply
    1,356.70x = 2,031.18 × 1,226.95
  4. Step 4: Simplify right side
    1,356.70x = 2,492,146.62
  5. Step 5: Solve for x
    x = 2,492,146.62/1,356.70
  6. Step 6: Final answer
    x = 1,836.92

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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.