Home / 2,151.18-2,968.65-1,219.50

Finding the Fourth Proportional to 2,151.18, 2,968.65 and 1,219.50

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Solution

The fourth proportional to 2,151.18, 2,968.65 and 1,219.50 is: 1,682.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.18 : 2,968.65 = 1,219.50 : x
  2. Step 2: Convert to fraction form
    2,151.18/2,968.65 = 1,219.50/x
  3. Step 3: Cross multiply
    2,151.18x = 2,968.65 × 1,219.50
  4. Step 4: Simplify right side
    2,151.18x = 3,620,268.68
  5. Step 5: Solve for x
    x = 3,620,268.68/2,151.18
  6. Step 6: Final answer
    x = 1,682.92

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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.