Home / 2,830.64-4,247.61-1,187.06

Finding the Fourth Proportional to 2,830.64, 4,247.61 and 1,187.06

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Solution

The fourth proportional to 2,830.64, 4,247.61 and 1,187.06 is: 1,781.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.64 : 4,247.61 = 1,187.06 : x
  2. Step 2: Convert to fraction form
    2,830.64/4,247.61 = 1,187.06/x
  3. Step 3: Cross multiply
    2,830.64x = 4,247.61 × 1,187.06
  4. Step 4: Simplify right side
    2,830.64x = 5,042,167.93
  5. Step 5: Solve for x
    x = 5,042,167.93/2,830.64
  6. Step 6: Final answer
    x = 1,781.28

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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.