Home / 2,292.67-3,161.55-1,978.93

Finding the Fourth Proportional to 2,292.67, 3,161.55 and 1,978.93

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Solution

The fourth proportional to 2,292.67, 3,161.55 and 1,978.93 is: 2,728.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,292.67 : 3,161.55 = 1,978.93 : x
  2. Step 2: Convert to fraction form
    2,292.67/3,161.55 = 1,978.93/x
  3. Step 3: Cross multiply
    2,292.67x = 3,161.55 × 1,978.93
  4. Step 4: Simplify right side
    2,292.67x = 6,256,486.14
  5. Step 5: Solve for x
    x = 6,256,486.14/2,292.67
  6. Step 6: Final answer
    x = 2,728.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.