Home / 1,639.20-2,260.08-1,017.12

Finding the Fourth Proportional to 1,639.20, 2,260.08 and 1,017.12

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Solution

The fourth proportional to 1,639.20, 2,260.08 and 1,017.12 is: 1,402.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.20 : 2,260.08 = 1,017.12 : x
  2. Step 2: Convert to fraction form
    1,639.20/2,260.08 = 1,017.12/x
  3. Step 3: Cross multiply
    1,639.20x = 2,260.08 × 1,017.12
  4. Step 4: Simplify right side
    1,639.20x = 2,298,772.57
  5. Step 5: Solve for x
    x = 2,298,772.57/1,639.20
  6. Step 6: Final answer
    x = 1,402.37

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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.