Home / 5,278.49-7,284.26-2,888.51

Finding the Fourth Proportional to 5,278.49, 7,284.26 and 2,888.51

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Solution

The fourth proportional to 5,278.49, 7,284.26 and 2,888.51 is: 3,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.49 : 7,284.26 = 2,888.51 : x
  2. Step 2: Convert to fraction form
    5,278.49/7,284.26 = 2,888.51/x
  3. Step 3: Cross multiply
    5,278.49x = 7,284.26 × 2,888.51
  4. Step 4: Simplify right side
    5,278.49x = 21,040,657.85
  5. Step 5: Solve for x
    x = 21,040,657.85/5,278.49
  6. Step 6: Final answer
    x = 3,986.11

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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.