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Finding the Fourth Proportional to 2,291.97, 3,165.50 and 1,549.00

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Solution

The fourth proportional to 2,291.97, 3,165.50 and 1,549.00 is: 2,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.97 : 3,165.50 = 1,549.00 : x
  2. Step 2: Convert to fraction form
    2,291.97/3,165.50 = 1,549.00/x
  3. Step 3: Cross multiply
    2,291.97x = 3,165.50 × 1,549.00
  4. Step 4: Simplify right side
    2,291.97x = 4,903,335.93
  5. Step 5: Solve for x
    x = 4,903,335.93/2,291.97
  6. Step 6: Final answer
    x = 2,139.35

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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.