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Finding the Fourth Proportional to 1,718.40, 2,574.84 and 1,672.83

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Solution

The fourth proportional to 1,718.40, 2,574.84 and 1,672.83 is: 2,506.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.40 : 2,574.84 = 1,672.83 : x
  2. Step 2: Convert to fraction form
    1,718.40/2,574.84 = 1,672.83/x
  3. Step 3: Cross multiply
    1,718.40x = 2,574.84 × 1,672.83
  4. Step 4: Simplify right side
    1,718.40x = 4,307,269.60
  5. Step 5: Solve for x
    x = 4,307,269.60/1,718.40
  6. Step 6: Final answer
    x = 2,506.56

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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.