Home / 1,689.58-2,331.87-1,219.04

Finding the Fourth Proportional to 1,689.58, 2,331.87 and 1,219.04

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Solution

The fourth proportional to 1,689.58, 2,331.87 and 1,219.04 is: 1,682.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.58 : 2,331.87 = 1,219.04 : x
  2. Step 2: Convert to fraction form
    1,689.58/2,331.87 = 1,219.04/x
  3. Step 3: Cross multiply
    1,689.58x = 2,331.87 × 1,219.04
  4. Step 4: Simplify right side
    1,689.58x = 2,842,642.80
  5. Step 5: Solve for x
    x = 2,842,642.80/1,689.58
  6. Step 6: Final answer
    x = 1,682.46

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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.