Home / 1,415.04-2,122.20-634.60

Finding the Fourth Proportional to 1,415.04, 2,122.20 and 634.60

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Solution

The fourth proportional to 1,415.04, 2,122.20 and 634.60 is: 951.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.04 : 2,122.20 = 634.60 : x
  2. Step 2: Convert to fraction form
    1,415.04/2,122.20 = 634.60/x
  3. Step 3: Cross multiply
    1,415.04x = 2,122.20 × 634.60
  4. Step 4: Simplify right side
    1,415.04x = 1,346,748.12
  5. Step 5: Solve for x
    x = 1,346,748.12/1,415.04
  6. Step 6: Final answer
    x = 951.74

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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.