Home / 7,104.60-9,805.28-5,121.72

Finding the Fourth Proportional to 7,104.60, 9,805.28 and 5,121.72

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Solution

The fourth proportional to 7,104.60, 9,805.28 and 5,121.72 is: 7,068.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,104.60 : 9,805.28 = 5,121.72 : x
  2. Step 2: Convert to fraction form
    7,104.60/9,805.28 = 5,121.72/x
  3. Step 3: Cross multiply
    7,104.60x = 9,805.28 × 5,121.72
  4. Step 4: Simplify right side
    7,104.60x = 50,219,898.68
  5. Step 5: Solve for x
    x = 50,219,898.68/7,104.60
  6. Step 6: Final answer
    x = 7,068.65

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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.