Home / 1,689.10-2,325.59-1,489.77

Finding the Fourth Proportional to 1,689.10, 2,325.59 and 1,489.77

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Solution

The fourth proportional to 1,689.10, 2,325.59 and 1,489.77 is: 2,051.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.10 : 2,325.59 = 1,489.77 : x
  2. Step 2: Convert to fraction form
    1,689.10/2,325.59 = 1,489.77/x
  3. Step 3: Cross multiply
    1,689.10x = 2,325.59 × 1,489.77
  4. Step 4: Simplify right side
    1,689.10x = 3,464,581.62
  5. Step 5: Solve for x
    x = 3,464,581.62/1,689.10
  6. Step 6: Final answer
    x = 2,051.14

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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.