Home / 1,689.49-2,530.31-1,631.09

Finding the Fourth Proportional to 1,689.49, 2,530.31 and 1,631.09

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Solution

The fourth proportional to 1,689.49, 2,530.31 and 1,631.09 is: 2,442.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.49 : 2,530.31 = 1,631.09 : x
  2. Step 2: Convert to fraction form
    1,689.49/2,530.31 = 1,631.09/x
  3. Step 3: Cross multiply
    1,689.49x = 2,530.31 × 1,631.09
  4. Step 4: Simplify right side
    1,689.49x = 4,127,154.76
  5. Step 5: Solve for x
    x = 4,127,154.76/1,689.49
  6. Step 6: Final answer
    x = 2,442.84

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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.