Home / 2,528-3,811.52-2,021.12

Finding the Fourth Proportional to 2,528, 3,811.52 and 2,021.12

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Solution

The fourth proportional to 2,528, 3,811.52 and 2,021.12 is: 3,047.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528 : 3,811.52 = 2,021.12 : x
  2. Step 2: Convert to fraction form
    2,528/3,811.52 = 2,021.12/x
  3. Step 3: Cross multiply
    2,528x = 3,811.52 × 2,021.12
  4. Step 4: Simplify right side
    2,528x = 7,703,539.30
  5. Step 5: Solve for x
    x = 7,703,539.30/2,528
  6. Step 6: Final answer
    x = 3,047.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.