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Finding the Fourth Proportional to 2,087.77, 3,127.47 and 993.19

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Solution

The fourth proportional to 2,087.77, 3,127.47 and 993.19 is: 1,487.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.77 : 3,127.47 = 993.19 : x
  2. Step 2: Convert to fraction form
    2,087.77/3,127.47 = 993.19/x
  3. Step 3: Cross multiply
    2,087.77x = 3,127.47 × 993.19
  4. Step 4: Simplify right side
    2,087.77x = 3,106,171.93
  5. Step 5: Solve for x
    x = 3,106,171.93/2,087.77
  6. Step 6: Final answer
    x = 1,487.79

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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.