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Finding the Fourth Proportional to 2,635.78, 3,953.67 and 904.42

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Solution

The fourth proportional to 2,635.78, 3,953.67 and 904.42 is: 1,356.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,635.78 : 3,953.67 = 904.42 : x
  2. Step 2: Convert to fraction form
    2,635.78/3,953.67 = 904.42/x
  3. Step 3: Cross multiply
    2,635.78x = 3,953.67 × 904.42
  4. Step 4: Simplify right side
    2,635.78x = 3,575,778.22
  5. Step 5: Solve for x
    x = 3,575,778.22/2,635.78
  6. Step 6: Final answer
    x = 1,356.63

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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.