Home / 2,985.96-4,120.60-1,659.68

Finding the Fourth Proportional to 2,985.96, 4,120.60 and 1,659.68

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Solution

The fourth proportional to 2,985.96, 4,120.60 and 1,659.68 is: 2,290.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.96 : 4,120.60 = 1,659.68 : x
  2. Step 2: Convert to fraction form
    2,985.96/4,120.60 = 1,659.68/x
  3. Step 3: Cross multiply
    2,985.96x = 4,120.60 × 1,659.68
  4. Step 4: Simplify right side
    2,985.96x = 6,838,877.41
  5. Step 5: Solve for x
    x = 6,838,877.41/2,985.96
  6. Step 6: Final answer
    x = 2,290.34

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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.