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Finding the Fourth Proportional to 1,866.48, 2,797.29 and 1,431.51

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Solution

The fourth proportional to 1,866.48, 2,797.29 and 1,431.51 is: 2,145.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.48 : 2,797.29 = 1,431.51 : x
  2. Step 2: Convert to fraction form
    1,866.48/2,797.29 = 1,431.51/x
  3. Step 3: Cross multiply
    1,866.48x = 2,797.29 × 1,431.51
  4. Step 4: Simplify right side
    1,866.48x = 4,004,348.61
  5. Step 5: Solve for x
    x = 4,004,348.61/1,866.48
  6. Step 6: Final answer
    x = 2,145.40

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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.