Home / 1,266.16-1,747.42-768.76

Finding the Fourth Proportional to 1,266.16, 1,747.42 and 768.76

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Solution

The fourth proportional to 1,266.16, 1,747.42 and 768.76 is: 1,060.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.16 : 1,747.42 = 768.76 : x
  2. Step 2: Convert to fraction form
    1,266.16/1,747.42 = 768.76/x
  3. Step 3: Cross multiply
    1,266.16x = 1,747.42 × 768.76
  4. Step 4: Simplify right side
    1,266.16x = 1,343,337.86
  5. Step 5: Solve for x
    x = 1,343,337.86/1,266.16
  6. Step 6: Final answer
    x = 1,060.96

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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.