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Finding the Fourth Proportional to 1,864.90, 2,791.95 and 1,404.62

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Solution

The fourth proportional to 1,864.90, 2,791.95 and 1,404.62 is: 2,102.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.90 : 2,791.95 = 1,404.62 : x
  2. Step 2: Convert to fraction form
    1,864.90/2,791.95 = 1,404.62/x
  3. Step 3: Cross multiply
    1,864.90x = 2,791.95 × 1,404.62
  4. Step 4: Simplify right side
    1,864.90x = 3,921,627.95
  5. Step 5: Solve for x
    x = 3,921,627.95/1,864.90
  6. Step 6: Final answer
    x = 2,102.86

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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.