Home / 5,208.12-7,813.31-1,921.23

Finding the Fourth Proportional to 5,208.12, 7,813.31 and 1,921.23

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Solution

The fourth proportional to 5,208.12, 7,813.31 and 1,921.23 is: 2,882.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.12 : 7,813.31 = 1,921.23 : x
  2. Step 2: Convert to fraction form
    5,208.12/7,813.31 = 1,921.23/x
  3. Step 3: Cross multiply
    5,208.12x = 7,813.31 × 1,921.23
  4. Step 4: Simplify right side
    5,208.12x = 15,011,155.97
  5. Step 5: Solve for x
    x = 15,011,155.97/5,208.12
  6. Step 6: Final answer
    x = 2,882.26

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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.