Home / 1,640.28-2,262.06-1,266.70

Finding the Fourth Proportional to 1,640.28, 2,262.06 and 1,266.70

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Solution

The fourth proportional to 1,640.28, 2,262.06 and 1,266.70 is: 1,746.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.28 : 2,262.06 = 1,266.70 : x
  2. Step 2: Convert to fraction form
    1,640.28/2,262.06 = 1,266.70/x
  3. Step 3: Cross multiply
    1,640.28x = 2,262.06 × 1,266.70
  4. Step 4: Simplify right side
    1,640.28x = 2,865,351.40
  5. Step 5: Solve for x
    x = 2,865,351.40/1,640.28
  6. Step 6: Final answer
    x = 1,746.87

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1.5x scale

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.