Home / 4,781.39-7,170.05-1,857.69

Finding the Fourth Proportional to 4,781.39, 7,170.05 and 1,857.69

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Solution

The fourth proportional to 4,781.39, 7,170.05 and 1,857.69 is: 2,785.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.39 : 7,170.05 = 1,857.69 : x
  2. Step 2: Convert to fraction form
    4,781.39/7,170.05 = 1,857.69/x
  3. Step 3: Cross multiply
    4,781.39x = 7,170.05 × 1,857.69
  4. Step 4: Simplify right side
    4,781.39x = 13,319,720.90
  5. Step 5: Solve for x
    x = 13,319,720.90/4,781.39
  6. Step 6: Final answer
    x = 2,785.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.