Home / 2,140.45-3,209.19-1,029.26

Finding the Fourth Proportional to 2,140.45, 3,209.19 and 1,029.26

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Solution

The fourth proportional to 2,140.45, 3,209.19 and 1,029.26 is: 1,543.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.45 : 3,209.19 = 1,029.26 : x
  2. Step 2: Convert to fraction form
    2,140.45/3,209.19 = 1,029.26/x
  3. Step 3: Cross multiply
    2,140.45x = 3,209.19 × 1,029.26
  4. Step 4: Simplify right side
    2,140.45x = 3,303,085.70
  5. Step 5: Solve for x
    x = 3,303,085.70/2,140.45
  6. Step 6: Final answer
    x = 1,543.17

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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.