Home / 7,720.79-10,654.64-4,183.92

Finding the Fourth Proportional to 7,720.79, 10,654.64 and 4,183.92

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Solution

The fourth proportional to 7,720.79, 10,654.64 and 4,183.92 is: 5,773.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.79 : 10,654.64 = 4,183.92 : x
  2. Step 2: Convert to fraction form
    7,720.79/10,654.64 = 4,183.92/x
  3. Step 3: Cross multiply
    7,720.79x = 10,654.64 × 4,183.92
  4. Step 4: Simplify right side
    7,720.79x = 44,578,156.16
  5. Step 5: Solve for x
    x = 44,578,156.16/7,720.79
  6. Step 6: Final answer
    x = 5,773.79

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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.