Home / 5,278.58-7,284.25-2,920.57

Finding the Fourth Proportional to 5,278.58, 7,284.25 and 2,920.57

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Solution

The fourth proportional to 5,278.58, 7,284.25 and 2,920.57 is: 4,030.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.58 : 7,284.25 = 2,920.57 : x
  2. Step 2: Convert to fraction form
    5,278.58/7,284.25 = 2,920.57/x
  3. Step 3: Cross multiply
    5,278.58x = 7,284.25 × 2,920.57
  4. Step 4: Simplify right side
    5,278.58x = 21,274,136.51
  5. Step 5: Solve for x
    x = 21,274,136.51/5,278.58
  6. Step 6: Final answer
    x = 4,030.28

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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.