Home / 3,718.19-5,131.08-2,039.55

Finding the Fourth Proportional to 3,718.19, 5,131.08 and 2,039.55

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Solution

The fourth proportional to 3,718.19, 5,131.08 and 2,039.55 is: 2,814.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.19 : 5,131.08 = 2,039.55 : x
  2. Step 2: Convert to fraction form
    3,718.19/5,131.08 = 2,039.55/x
  3. Step 3: Cross multiply
    3,718.19x = 5,131.08 × 2,039.55
  4. Step 4: Simplify right side
    3,718.19x = 10,465,094.21
  5. Step 5: Solve for x
    x = 10,465,094.21/3,718.19
  6. Step 6: Final answer
    x = 2,814.57

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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.