Home / 1,819.40-2,510.92-1,022.80

Finding the Fourth Proportional to 1,819.40, 2,510.92 and 1,022.80

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Solution

The fourth proportional to 1,819.40, 2,510.92 and 1,022.80 is: 1,411.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.40 : 2,510.92 = 1,022.80 : x
  2. Step 2: Convert to fraction form
    1,819.40/2,510.92 = 1,022.80/x
  3. Step 3: Cross multiply
    1,819.40x = 2,510.92 × 1,022.80
  4. Step 4: Simplify right side
    1,819.40x = 2,568,168.98
  5. Step 5: Solve for x
    x = 2,568,168.98/1,819.40
  6. Step 6: Final answer
    x = 1,411.55

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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.