Home / 4,941.78-6,812.55-4,091.55

Finding the Fourth Proportional to 4,941.78, 6,812.55 and 4,091.55

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Solution

The fourth proportional to 4,941.78, 6,812.55 and 4,091.55 is: 5,640.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,941.78 : 6,812.55 = 4,091.55 : x
  2. Step 2: Convert to fraction form
    4,941.78/6,812.55 = 4,091.55/x
  3. Step 3: Cross multiply
    4,941.78x = 6,812.55 × 4,091.55
  4. Step 4: Simplify right side
    4,941.78x = 27,873,888.95
  5. Step 5: Solve for x
    x = 27,873,888.95/4,941.78
  6. Step 6: Final answer
    x = 5,640.46

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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.