Home / 2,985.58-4,120.13-1,659.31

Finding the Fourth Proportional to 2,985.58, 4,120.13 and 1,659.31

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Solution

The fourth proportional to 2,985.58, 4,120.13 and 1,659.31 is: 2,289.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.58 : 4,120.13 = 1,659.31 : x
  2. Step 2: Convert to fraction form
    2,985.58/4,120.13 = 1,659.31/x
  3. Step 3: Cross multiply
    2,985.58x = 4,120.13 × 1,659.31
  4. Step 4: Simplify right side
    2,985.58x = 6,836,572.91
  5. Step 5: Solve for x
    x = 6,836,572.91/2,985.58
  6. Step 6: Final answer
    x = 2,289.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.