Home / 3,685.08-5,085.72-2,113.68

Finding the Fourth Proportional to 3,685.08, 5,085.72 and 2,113.68

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Solution

The fourth proportional to 3,685.08, 5,085.72 and 2,113.68 is: 2,917.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.08 : 5,085.72 = 2,113.68 : x
  2. Step 2: Convert to fraction form
    3,685.08/5,085.72 = 2,113.68/x
  3. Step 3: Cross multiply
    3,685.08x = 5,085.72 × 2,113.68
  4. Step 4: Simplify right side
    3,685.08x = 10,749,584.65
  5. Step 5: Solve for x
    x = 10,749,584.65/3,685.08
  6. Step 6: Final answer
    x = 2,917.06

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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.