Home / 2,028.40-2,810.96-1,989.52

Finding the Fourth Proportional to 2,028.40, 2,810.96 and 1,989.52

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Solution

The fourth proportional to 2,028.40, 2,810.96 and 1,989.52 is: 2,757.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.40 : 2,810.96 = 1,989.52 : x
  2. Step 2: Convert to fraction form
    2,028.40/2,810.96 = 1,989.52/x
  3. Step 3: Cross multiply
    2,028.40x = 2,810.96 × 1,989.52
  4. Step 4: Simplify right side
    2,028.40x = 5,592,461.14
  5. Step 5: Solve for x
    x = 5,592,461.14/2,028.40
  6. Step 6: Final answer
    x = 2,757.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.