Home / 1,640.91-2,263.33-977.25

Finding the Fourth Proportional to 1,640.91, 2,263.33 and 977.25

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Solution

The fourth proportional to 1,640.91, 2,263.33 and 977.25 is: 1,347.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.91 : 2,263.33 = 977.25 : x
  2. Step 2: Convert to fraction form
    1,640.91/2,263.33 = 977.25/x
  3. Step 3: Cross multiply
    1,640.91x = 2,263.33 × 977.25
  4. Step 4: Simplify right side
    1,640.91x = 2,211,836.80
  5. Step 5: Solve for x
    x = 2,211,836.80/1,640.91
  6. Step 6: Final answer
    x = 1,347.93

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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.