Home / 5,215.50-7,823.17-1,266.79

Finding the Fourth Proportional to 5,215.50, 7,823.17 and 1,266.79

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Solution

The fourth proportional to 5,215.50, 7,823.17 and 1,266.79 is: 1,900.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.50 : 7,823.17 = 1,266.79 : x
  2. Step 2: Convert to fraction form
    5,215.50/7,823.17 = 1,266.79/x
  3. Step 3: Cross multiply
    5,215.50x = 7,823.17 × 1,266.79
  4. Step 4: Simplify right side
    5,215.50x = 9,910,313.52
  5. Step 5: Solve for x
    x = 9,910,313.52/5,215.50
  6. Step 6: Final answer
    x = 1,900.17

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Double scale
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Similar ratio
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1.5x scale

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.