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Finding the Fourth Proportional to 1,717.87, 2,574.72 and 791.51

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Solution

The fourth proportional to 1,717.87, 2,574.72 and 791.51 is: 1,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.87 : 2,574.72 = 791.51 : x
  2. Step 2: Convert to fraction form
    1,717.87/2,574.72 = 791.51/x
  3. Step 3: Cross multiply
    1,717.87x = 2,574.72 × 791.51
  4. Step 4: Simplify right side
    1,717.87x = 2,037,916.63
  5. Step 5: Solve for x
    x = 2,037,916.63/1,717.87
  6. Step 6: Final answer
    x = 1,186.30

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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.