Home / 1,640.18-2,263.78-1,011.02

Finding the Fourth Proportional to 1,640.18, 2,263.78 and 1,011.02

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Solution

The fourth proportional to 1,640.18, 2,263.78 and 1,011.02 is: 1,395.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.18 : 2,263.78 = 1,011.02 : x
  2. Step 2: Convert to fraction form
    1,640.18/2,263.78 = 1,011.02/x
  3. Step 3: Cross multiply
    1,640.18x = 2,263.78 × 1,011.02
  4. Step 4: Simplify right side
    1,640.18x = 2,288,726.86
  5. Step 5: Solve for x
    x = 2,288,726.86/1,640.18
  6. Step 6: Final answer
    x = 1,395.41

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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.