Home / 3,685.38-5,085.93-2,113.78

Finding the Fourth Proportional to 3,685.38, 5,085.93 and 2,113.78

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Solution

The fourth proportional to 3,685.38, 5,085.93 and 2,113.78 is: 2,917.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.38 : 5,085.93 = 2,113.78 : x
  2. Step 2: Convert to fraction form
    3,685.38/5,085.93 = 2,113.78/x
  3. Step 3: Cross multiply
    3,685.38x = 5,085.93 × 2,113.78
  4. Step 4: Simplify right side
    3,685.38x = 10,750,537.12
  5. Step 5: Solve for x
    x = 10,750,537.12/3,685.38
  6. Step 6: Final answer
    x = 2,917.08

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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.