Home / 3,685.12-5,085.92-2,113.44

Finding the Fourth Proportional to 3,685.12, 5,085.92 and 2,113.44

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Solution

The fourth proportional to 3,685.12, 5,085.92 and 2,113.44 is: 2,916.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.12 : 5,085.92 = 2,113.44 : x
  2. Step 2: Convert to fraction form
    3,685.12/5,085.92 = 2,113.44/x
  3. Step 3: Cross multiply
    3,685.12x = 5,085.92 × 2,113.44
  4. Step 4: Simplify right side
    3,685.12x = 10,748,786.76
  5. Step 5: Solve for x
    x = 10,748,786.76/3,685.12
  6. Step 6: Final answer
    x = 2,916.81

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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.