Home / 5,278.29-7,283.94-2,920.43

Finding the Fourth Proportional to 5,278.29, 7,283.94 and 2,920.43

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Solution

The fourth proportional to 5,278.29, 7,283.94 and 2,920.43 is: 4,030.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.29 : 7,283.94 = 2,920.43 : x
  2. Step 2: Convert to fraction form
    5,278.29/7,283.94 = 2,920.43/x
  3. Step 3: Cross multiply
    5,278.29x = 7,283.94 × 2,920.43
  4. Step 4: Simplify right side
    5,278.29x = 21,272,236.89
  5. Step 5: Solve for x
    x = 21,272,236.89/5,278.29
  6. Step 6: Final answer
    x = 4,030.14

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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.