Home / 2,878.50-3,972.81-1,699.86

Finding the Fourth Proportional to 2,878.50, 3,972.81 and 1,699.86

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Solution

The fourth proportional to 2,878.50, 3,972.81 and 1,699.86 is: 2,346.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.50 : 3,972.81 = 1,699.86 : x
  2. Step 2: Convert to fraction form
    2,878.50/3,972.81 = 1,699.86/x
  3. Step 3: Cross multiply
    2,878.50x = 3,972.81 × 1,699.86
  4. Step 4: Simplify right side
    2,878.50x = 6,753,220.81
  5. Step 5: Solve for x
    x = 6,753,220.81/2,878.50
  6. Step 6: Final answer
    x = 2,346.09

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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.