Home / 2,985.75-4,120.48-1,659.42

Finding the Fourth Proportional to 2,985.75, 4,120.48 and 1,659.42

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Solution

The fourth proportional to 2,985.75, 4,120.48 and 1,659.42 is: 2,290.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.75 : 4,120.48 = 1,659.42 : x
  2. Step 2: Convert to fraction form
    2,985.75/4,120.48 = 1,659.42/x
  3. Step 3: Cross multiply
    2,985.75x = 4,120.48 × 1,659.42
  4. Step 4: Simplify right side
    2,985.75x = 6,837,606.92
  5. Step 5: Solve for x
    x = 6,837,606.92/2,985.75
  6. Step 6: Final answer
    x = 2,290.08

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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.