Home / 1,310.39-1,955.98-1,138.26

Finding the Fourth Proportional to 1,310.39, 1,955.98 and 1,138.26

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Solution

The fourth proportional to 1,310.39, 1,955.98 and 1,138.26 is: 1,699.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.39 : 1,955.98 = 1,138.26 : x
  2. Step 2: Convert to fraction form
    1,310.39/1,955.98 = 1,138.26/x
  3. Step 3: Cross multiply
    1,310.39x = 1,955.98 × 1,138.26
  4. Step 4: Simplify right side
    1,310.39x = 2,226,422.55
  5. Step 5: Solve for x
    x = 2,226,422.55/1,310.39
  6. Step 6: Final answer
    x = 1,699.05

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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.