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Finding the Fourth Proportional to 2,137.68, 3,207.06 and 904.46

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Solution

The fourth proportional to 2,137.68, 3,207.06 and 904.46 is: 1,356.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.68 : 3,207.06 = 904.46 : x
  2. Step 2: Convert to fraction form
    2,137.68/3,207.06 = 904.46/x
  3. Step 3: Cross multiply
    2,137.68x = 3,207.06 × 904.46
  4. Step 4: Simplify right side
    2,137.68x = 2,900,657.49
  5. Step 5: Solve for x
    x = 2,900,657.49/2,137.68
  6. Step 6: Final answer
    x = 1,356.92

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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.