Home / 4,749.88-7,124.82-1,287.13

Finding the Fourth Proportional to 4,749.88, 7,124.82 and 1,287.13

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Solution

The fourth proportional to 4,749.88, 7,124.82 and 1,287.13 is: 1,930.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.88 : 7,124.82 = 1,287.13 : x
  2. Step 2: Convert to fraction form
    4,749.88/7,124.82 = 1,287.13/x
  3. Step 3: Cross multiply
    4,749.88x = 7,124.82 × 1,287.13
  4. Step 4: Simplify right side
    4,749.88x = 9,170,527.51
  5. Step 5: Solve for x
    x = 9,170,527.51/4,749.88
  6. Step 6: Final answer
    x = 1,930.69

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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.