Home / 2,689.17-4,032.13-1,107.40

Finding the Fourth Proportional to 2,689.17, 4,032.13 and 1,107.40

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Solution

The fourth proportional to 2,689.17, 4,032.13 and 1,107.40 is: 1,660.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.17 : 4,032.13 = 1,107.40 : x
  2. Step 2: Convert to fraction form
    2,689.17/4,032.13 = 1,107.40/x
  3. Step 3: Cross multiply
    2,689.17x = 4,032.13 × 1,107.40
  4. Step 4: Simplify right side
    2,689.17x = 4,465,166.21
  5. Step 5: Solve for x
    x = 4,465,166.21/2,689.17
  6. Step 6: Final answer
    x = 1,660.42

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1.5x scale

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.