Home / 7,770.56-10,719.90-5,251.86

Finding the Fourth Proportional to 7,770.56, 10,719.90 and 5,251.86

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Solution

The fourth proportional to 7,770.56, 10,719.90 and 5,251.86 is: 7,245.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.56 : 10,719.90 = 5,251.86 : x
  2. Step 2: Convert to fraction form
    7,770.56/10,719.90 = 5,251.86/x
  3. Step 3: Cross multiply
    7,770.56x = 10,719.90 × 5,251.86
  4. Step 4: Simplify right side
    7,770.56x = 56,299,414.01
  5. Step 5: Solve for x
    x = 56,299,414.01/7,770.56
  6. Step 6: Final answer
    x = 7,245.22

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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.