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Finding the Fourth Proportional to 4,679.88, 7,019.82 and 1,393.02

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Solution

The fourth proportional to 4,679.88, 7,019.82 and 1,393.02 is: 2,089.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.88 : 7,019.82 = 1,393.02 : x
  2. Step 2: Convert to fraction form
    4,679.88/7,019.82 = 1,393.02/x
  3. Step 3: Cross multiply
    4,679.88x = 7,019.82 × 1,393.02
  4. Step 4: Simplify right side
    4,679.88x = 9,778,749.66
  5. Step 5: Solve for x
    x = 9,778,749.66/4,679.88
  6. Step 6: Final answer
    x = 2,089.53

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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.