Home / 5,278.85-7,284.51-2,888.34

Finding the Fourth Proportional to 5,278.85, 7,284.51 and 2,888.34

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Solution

The fourth proportional to 5,278.85, 7,284.51 and 2,888.34 is: 3,985.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.85 : 7,284.51 = 2,888.34 : x
  2. Step 2: Convert to fraction form
    5,278.85/7,284.51 = 2,888.34/x
  3. Step 3: Cross multiply
    5,278.85x = 7,284.51 × 2,888.34
  4. Step 4: Simplify right side
    5,278.85x = 21,040,141.61
  5. Step 5: Solve for x
    x = 21,040,141.61/5,278.85
  6. Step 6: Final answer
    x = 3,985.75

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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.