Home / 7,776.64-10,731.75-4,239.85

Finding the Fourth Proportional to 7,776.64, 10,731.75 and 4,239.85

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Solution

The fourth proportional to 7,776.64, 10,731.75 and 4,239.85 is: 5,850.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.64 : 10,731.75 = 4,239.85 : x
  2. Step 2: Convert to fraction form
    7,776.64/10,731.75 = 4,239.85/x
  3. Step 3: Cross multiply
    7,776.64x = 10,731.75 × 4,239.85
  4. Step 4: Simplify right side
    7,776.64x = 45,501,010.24
  5. Step 5: Solve for x
    x = 45,501,010.24/7,776.64
  6. Step 6: Final answer
    x = 5,850.99

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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.