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Finding the Fourth Proportional to 1,866.74, 2,801.93 and 1,423.85

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Solution

The fourth proportional to 1,866.74, 2,801.93 and 1,423.85 is: 2,137.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.74 : 2,801.93 = 1,423.85 : x
  2. Step 2: Convert to fraction form
    1,866.74/2,801.93 = 1,423.85/x
  3. Step 3: Cross multiply
    1,866.74x = 2,801.93 × 1,423.85
  4. Step 4: Simplify right side
    1,866.74x = 3,989,506.90
  5. Step 5: Solve for x
    x = 3,989,506.90/1,866.74
  6. Step 6: Final answer
    x = 2,137.16

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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.