Home / 5,422.31-7,482.80-2,938.31

Finding the Fourth Proportional to 5,422.31, 7,482.80 and 2,938.31

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Solution

The fourth proportional to 5,422.31, 7,482.80 and 2,938.31 is: 4,054.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.31 : 7,482.80 = 2,938.31 : x
  2. Step 2: Convert to fraction form
    5,422.31/7,482.80 = 2,938.31/x
  3. Step 3: Cross multiply
    5,422.31x = 7,482.80 × 2,938.31
  4. Step 4: Simplify right side
    5,422.31x = 21,986,786.07
  5. Step 5: Solve for x
    x = 21,986,786.07/5,422.31
  6. Step 6: Final answer
    x = 4,054.87

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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.