Home / 2,985.43-4,478.23-1,425.60

Finding the Fourth Proportional to 2,985.43, 4,478.23 and 1,425.60

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Solution

The fourth proportional to 2,985.43, 4,478.23 and 1,425.60 is: 2,138.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.43 : 4,478.23 = 1,425.60 : x
  2. Step 2: Convert to fraction form
    2,985.43/4,478.23 = 1,425.60/x
  3. Step 3: Cross multiply
    2,985.43x = 4,478.23 × 1,425.60
  4. Step 4: Simplify right side
    2,985.43x = 6,384,164.69
  5. Step 5: Solve for x
    x = 6,384,164.69/2,985.43
  6. Step 6: Final answer
    x = 2,138.44

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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.