Home / 7,784.54-10,742.66-4,247.78

Finding the Fourth Proportional to 7,784.54, 10,742.66 and 4,247.78

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Solution

The fourth proportional to 7,784.54, 10,742.66 and 4,247.78 is: 5,861.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.54 : 10,742.66 = 4,247.78 : x
  2. Step 2: Convert to fraction form
    7,784.54/10,742.66 = 4,247.78/x
  3. Step 3: Cross multiply
    7,784.54x = 10,742.66 × 4,247.78
  4. Step 4: Simplify right side
    7,784.54x = 45,632,381.34
  5. Step 5: Solve for x
    x = 45,632,381.34/7,784.54
  6. Step 6: Final answer
    x = 5,861.93

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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.