Home / 1,640.60-2,263.92-1,011.05

Finding the Fourth Proportional to 1,640.60, 2,263.92 and 1,011.05

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Solution

The fourth proportional to 1,640.60, 2,263.92 and 1,011.05 is: 1,395.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.60 : 2,263.92 = 1,011.05 : x
  2. Step 2: Convert to fraction form
    1,640.60/2,263.92 = 1,011.05/x
  3. Step 3: Cross multiply
    1,640.60x = 2,263.92 × 1,011.05
  4. Step 4: Simplify right side
    1,640.60x = 2,288,936.32
  5. Step 5: Solve for x
    x = 2,288,936.32/1,640.60
  6. Step 6: Final answer
    x = 1,395.18

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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.