Home / 7,777.30-11,643.09-5,139.94

Finding the Fourth Proportional to 7,777.30, 11,643.09 and 5,139.94

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Solution

The fourth proportional to 7,777.30, 11,643.09 and 5,139.94 is: 7,694.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.30 : 11,643.09 = 5,139.94 : x
  2. Step 2: Convert to fraction form
    7,777.30/11,643.09 = 5,139.94/x
  3. Step 3: Cross multiply
    7,777.30x = 11,643.09 × 5,139.94
  4. Step 4: Simplify right side
    7,777.30x = 59,844,784.01
  5. Step 5: Solve for x
    x = 59,844,784.01/7,777.30
  6. Step 6: Final answer
    x = 7,694.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.