Home / 4,990.23-7,485.66-1,292.49

Finding the Fourth Proportional to 4,990.23, 7,485.66 and 1,292.49

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Solution

The fourth proportional to 4,990.23, 7,485.66 and 1,292.49 is: 1,938.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.23 : 7,485.66 = 1,292.49 : x
  2. Step 2: Convert to fraction form
    4,990.23/7,485.66 = 1,292.49/x
  3. Step 3: Cross multiply
    4,990.23x = 7,485.66 × 1,292.49
  4. Step 4: Simplify right side
    4,990.23x = 9,675,140.69
  5. Step 5: Solve for x
    x = 9,675,140.69/4,990.23
  6. Step 6: Final answer
    x = 1,938.82

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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.