Home / 7,784.48-10,742.42-4,247.76

Finding the Fourth Proportional to 7,784.48, 10,742.42 and 4,247.76

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Solution

The fourth proportional to 7,784.48, 10,742.42 and 4,247.76 is: 5,861.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.48 : 10,742.42 = 4,247.76 : x
  2. Step 2: Convert to fraction form
    7,784.48/10,742.42 = 4,247.76/x
  3. Step 3: Cross multiply
    7,784.48x = 10,742.42 × 4,247.76
  4. Step 4: Simplify right side
    7,784.48x = 45,631,221.98
  5. Step 5: Solve for x
    x = 45,631,221.98/7,784.48
  6. Step 6: Final answer
    x = 5,861.82

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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.