Home / 1,266.70-1,748.38-1,135.48

Finding the Fourth Proportional to 1,266.70, 1,748.38 and 1,135.48

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Solution

The fourth proportional to 1,266.70, 1,748.38 and 1,135.48 is: 1,567.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.70 : 1,748.38 = 1,135.48 : x
  2. Step 2: Convert to fraction form
    1,266.70/1,748.38 = 1,135.48/x
  3. Step 3: Cross multiply
    1,266.70x = 1,748.38 × 1,135.48
  4. Step 4: Simplify right side
    1,266.70x = 1,985,250.52
  5. Step 5: Solve for x
    x = 1,985,250.52/1,266.70
  6. Step 6: Final answer
    x = 1,567.26

Related Problems

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Half scale
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Double scale
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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.