Home / 1,313.18-1,959.53-1,196.74

Finding the Fourth Proportional to 1,313.18, 1,959.53 and 1,196.74

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Solution

The fourth proportional to 1,313.18, 1,959.53 and 1,196.74 is: 1,785.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.18 : 1,959.53 = 1,196.74 : x
  2. Step 2: Convert to fraction form
    1,313.18/1,959.53 = 1,196.74/x
  3. Step 3: Cross multiply
    1,313.18x = 1,959.53 × 1,196.74
  4. Step 4: Simplify right side
    1,313.18x = 2,345,044.40
  5. Step 5: Solve for x
    x = 2,345,044.40/1,313.18
  6. Step 6: Final answer
    x = 1,785.78

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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.