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Finding the Fourth Proportional to 6,488.77, 9,727.54 and 5,507.99

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Solution

The fourth proportional to 6,488.77, 9,727.54 and 5,507.99 is: 8,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,488.77 : 9,727.54 = 5,507.99 : x
  2. Step 2: Convert to fraction form
    6,488.77/9,727.54 = 5,507.99/x
  3. Step 3: Cross multiply
    6,488.77x = 9,727.54 × 5,507.99
  4. Step 4: Simplify right side
    6,488.77x = 53,579,193.04
  5. Step 5: Solve for x
    x = 53,579,193.04/6,488.77
  6. Step 6: Final answer
    x = 8,257.22

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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.