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Finding the Fourth Proportional to 7,809.53, 10,777.19 and 4,224.48

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Solution

The fourth proportional to 7,809.53, 10,777.19 and 4,224.48 is: 5,829.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.53 : 10,777.19 = 4,224.48 : x
  2. Step 2: Convert to fraction form
    7,809.53/10,777.19 = 4,224.48/x
  3. Step 3: Cross multiply
    7,809.53x = 10,777.19 × 4,224.48
  4. Step 4: Simplify right side
    7,809.53x = 45,528,023.61
  5. Step 5: Solve for x
    x = 45,528,023.61/7,809.53
  6. Step 6: Final answer
    x = 5,829.80

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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.