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Finding the Fourth Proportional to 2,391.63, 3,292.81 and 2,017.68

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Solution

The fourth proportional to 2,391.63, 3,292.81 and 2,017.68 is: 2,777.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.63 : 3,292.81 = 2,017.68 : x
  2. Step 2: Convert to fraction form
    2,391.63/3,292.81 = 2,017.68/x
  3. Step 3: Cross multiply
    2,391.63x = 3,292.81 × 2,017.68
  4. Step 4: Simplify right side
    2,391.63x = 6,643,836.88
  5. Step 5: Solve for x
    x = 6,643,836.88/2,391.63
  6. Step 6: Final answer
    x = 2,777.95

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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.