Home / 1,640.43-2,258.55-1,528.65

Finding the Fourth Proportional to 1,640.43, 2,258.55 and 1,528.65

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Solution

The fourth proportional to 1,640.43, 2,258.55 and 1,528.65 is: 2,104.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.43 : 2,258.55 = 1,528.65 : x
  2. Step 2: Convert to fraction form
    1,640.43/2,258.55 = 1,528.65/x
  3. Step 3: Cross multiply
    1,640.43x = 2,258.55 × 1,528.65
  4. Step 4: Simplify right side
    1,640.43x = 3,452,532.46
  5. Step 5: Solve for x
    x = 3,452,532.46/1,640.43
  6. Step 6: Final answer
    x = 2,104.65

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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.