Home / 5,278.45-7,283.87-2,920.63

Finding the Fourth Proportional to 5,278.45, 7,283.87 and 2,920.63

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Solution

The fourth proportional to 5,278.45, 7,283.87 and 2,920.63 is: 4,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.45 : 7,283.87 = 2,920.63 : x
  2. Step 2: Convert to fraction form
    5,278.45/7,283.87 = 2,920.63/x
  3. Step 3: Cross multiply
    5,278.45x = 7,283.87 × 2,920.63
  4. Step 4: Simplify right side
    5,278.45x = 21,273,489.24
  5. Step 5: Solve for x
    x = 21,273,489.24/5,278.45
  6. Step 6: Final answer
    x = 4,030.25

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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.