Home / 5,278.62-7,284.50-2,920.75

Finding the Fourth Proportional to 5,278.62, 7,284.50 and 2,920.75

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Solution

The fourth proportional to 5,278.62, 7,284.50 and 2,920.75 is: 4,030.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.62 : 7,284.50 = 2,920.75 : x
  2. Step 2: Convert to fraction form
    5,278.62/7,284.50 = 2,920.75/x
  3. Step 3: Cross multiply
    5,278.62x = 7,284.50 × 2,920.75
  4. Step 4: Simplify right side
    5,278.62x = 21,276,188.77
  5. Step 5: Solve for x
    x = 21,276,188.77/5,278.62
  6. Step 6: Final answer
    x = 4,030.64

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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.