Home / 2,785.03-4,161.16-2,688.12

Finding the Fourth Proportional to 2,785.03, 4,161.16 and 2,688.12

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Solution

The fourth proportional to 2,785.03, 4,161.16 and 2,688.12 is: 4,016.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.03 : 4,161.16 = 2,688.12 : x
  2. Step 2: Convert to fraction form
    2,785.03/4,161.16 = 2,688.12/x
  3. Step 3: Cross multiply
    2,785.03x = 4,161.16 × 2,688.12
  4. Step 4: Simplify right side
    2,785.03x = 11,185,697.42
  5. Step 5: Solve for x
    x = 11,185,697.42/2,785.03
  6. Step 6: Final answer
    x = 4,016.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.