Home / 2,985.79-4,456.77-2,765.88

Finding the Fourth Proportional to 2,985.79, 4,456.77 and 2,765.88

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Solution

The fourth proportional to 2,985.79, 4,456.77 and 2,765.88 is: 4,128.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.79 : 4,456.77 = 2,765.88 : x
  2. Step 2: Convert to fraction form
    2,985.79/4,456.77 = 2,765.88/x
  3. Step 3: Cross multiply
    2,985.79x = 4,456.77 × 2,765.88
  4. Step 4: Simplify right side
    2,985.79x = 12,326,891.01
  5. Step 5: Solve for x
    x = 12,326,891.01/2,985.79
  6. Step 6: Final answer
    x = 4,128.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.