Home / 4,990.75-7,486.10-1,292.97

Finding the Fourth Proportional to 4,990.75, 7,486.10 and 1,292.97

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Solution

The fourth proportional to 4,990.75, 7,486.10 and 1,292.97 is: 1,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.75 : 7,486.10 = 1,292.97 : x
  2. Step 2: Convert to fraction form
    4,990.75/7,486.10 = 1,292.97/x
  3. Step 3: Cross multiply
    4,990.75x = 7,486.10 × 1,292.97
  4. Step 4: Simplify right side
    4,990.75x = 9,679,296.25
  5. Step 5: Solve for x
    x = 9,679,296.25/4,990.75
  6. Step 6: Final answer
    x = 1,939.45

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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.