Home / 3,785.11-5,217.76-2,987.06

Finding the Fourth Proportional to 3,785.11, 5,217.76 and 2,987.06

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Solution

The fourth proportional to 3,785.11, 5,217.76 and 2,987.06 is: 4,117.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.11 : 5,217.76 = 2,987.06 : x
  2. Step 2: Convert to fraction form
    3,785.11/5,217.76 = 2,987.06/x
  3. Step 3: Cross multiply
    3,785.11x = 5,217.76 × 2,987.06
  4. Step 4: Simplify right side
    3,785.11x = 15,585,762.19
  5. Step 5: Solve for x
    x = 15,585,762.19/3,785.11
  6. Step 6: Final answer
    x = 4,117.65

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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.