Home / 2,938.56-4,407.84-1,292.78

Finding the Fourth Proportional to 2,938.56, 4,407.84 and 1,292.78

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Solution

The fourth proportional to 2,938.56, 4,407.84 and 1,292.78 is: 1,939.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.56 : 4,407.84 = 1,292.78 : x
  2. Step 2: Convert to fraction form
    2,938.56/4,407.84 = 1,292.78/x
  3. Step 3: Cross multiply
    2,938.56x = 4,407.84 × 1,292.78
  4. Step 4: Simplify right side
    2,938.56x = 5,698,345.36
  5. Step 5: Solve for x
    x = 5,698,345.36/2,938.56
  6. Step 6: Final answer
    x = 1,939.16

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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.