Home / 1,917.36-2,878.08-1,612.56

Finding the Fourth Proportional to 1,917.36, 2,878.08 and 1,612.56

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Solution

The fourth proportional to 1,917.36, 2,878.08 and 1,612.56 is: 2,420.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.36 : 2,878.08 = 1,612.56 : x
  2. Step 2: Convert to fraction form
    1,917.36/2,878.08 = 1,612.56/x
  3. Step 3: Cross multiply
    1,917.36x = 2,878.08 × 1,612.56
  4. Step 4: Simplify right side
    1,917.36x = 4,641,076.68
  5. Step 5: Solve for x
    x = 4,641,076.68/1,917.36
  6. Step 6: Final answer
    x = 2,420.56

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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.