Home / 1,296.32-1,940.28-1,097.12

Finding the Fourth Proportional to 1,296.32, 1,940.28 and 1,097.12

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Solution

The fourth proportional to 1,296.32, 1,940.28 and 1,097.12 is: 1,642.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.32 : 1,940.28 = 1,097.12 : x
  2. Step 2: Convert to fraction form
    1,296.32/1,940.28 = 1,097.12/x
  3. Step 3: Cross multiply
    1,296.32x = 1,940.28 × 1,097.12
  4. Step 4: Simplify right side
    1,296.32x = 2,128,719.99
  5. Step 5: Solve for x
    x = 2,128,719.99/1,296.32
  6. Step 6: Final answer
    x = 1,642.13

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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.