Home / 2,812.40-4,220.28-1,350.80

Finding the Fourth Proportional to 2,812.40, 4,220.28 and 1,350.80

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Solution

The fourth proportional to 2,812.40, 4,220.28 and 1,350.80 is: 2,027.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.40 : 4,220.28 = 1,350.80 : x
  2. Step 2: Convert to fraction form
    2,812.40/4,220.28 = 1,350.80/x
  3. Step 3: Cross multiply
    2,812.40x = 4,220.28 × 1,350.80
  4. Step 4: Simplify right side
    2,812.40x = 5,700,754.22
  5. Step 5: Solve for x
    x = 5,700,754.22/2,812.40
  6. Step 6: Final answer
    x = 2,027.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.