Home / 10,380.79-15,573.82-2,985.09

Finding the Fourth Proportional to 10,380.79, 15,573.82 and 2,985.09

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Solution

The fourth proportional to 10,380.79, 15,573.82 and 2,985.09 is: 4,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.79 : 15,573.82 = 2,985.09 : x
  2. Step 2: Convert to fraction form
    10,380.79/15,573.82 = 2,985.09/x
  3. Step 3: Cross multiply
    10,380.79x = 15,573.82 × 2,985.09
  4. Step 4: Simplify right side
    10,380.79x = 46,489,254.34
  5. Step 5: Solve for x
    x = 46,489,254.34/10,380.79
  6. Step 6: Final answer
    x = 4,478.39

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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.