Home / 7,378.08-10,167.72-5,278.56

Finding the Fourth Proportional to 7,378.08, 10,167.72 and 5,278.56

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Solution

The fourth proportional to 7,378.08, 10,167.72 and 5,278.56 is: 7,274.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,378.08 : 10,167.72 = 5,278.56 : x
  2. Step 2: Convert to fraction form
    7,378.08/10,167.72 = 5,278.56/x
  3. Step 3: Cross multiply
    7,378.08x = 10,167.72 × 5,278.56
  4. Step 4: Simplify right side
    7,378.08x = 53,670,920.08
  5. Step 5: Solve for x
    x = 53,670,920.08/7,378.08
  6. Step 6: Final answer
    x = 7,274.37

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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.