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Finding the Fourth Proportional to 1,296.30, 1,788.75 and 1,034.22

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Solution

The fourth proportional to 1,296.30, 1,788.75 and 1,034.22 is: 1,427.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.30 : 1,788.75 = 1,034.22 : x
  2. Step 2: Convert to fraction form
    1,296.30/1,788.75 = 1,034.22/x
  3. Step 3: Cross multiply
    1,296.30x = 1,788.75 × 1,034.22
  4. Step 4: Simplify right side
    1,296.30x = 1,849,961.03
  5. Step 5: Solve for x
    x = 1,849,961.03/1,296.30
  6. Step 6: Final answer
    x = 1,427.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.