Home / 2,015.78-2,781.29-1,176.00

Finding the Fourth Proportional to 2,015.78, 2,781.29 and 1,176.00

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Solution

The fourth proportional to 2,015.78, 2,781.29 and 1,176.00 is: 1,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.78 : 2,781.29 = 1,176.00 : x
  2. Step 2: Convert to fraction form
    2,015.78/2,781.29 = 1,176.00/x
  3. Step 3: Cross multiply
    2,015.78x = 2,781.29 × 1,176.00
  4. Step 4: Simplify right side
    2,015.78x = 3,270,798.58
  5. Step 5: Solve for x
    x = 3,270,798.58/2,015.78
  6. Step 6: Final answer
    x = 1,622.60

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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.