Home / 2,921.85-4,032.30-1,663.02

Finding the Fourth Proportional to 2,921.85, 4,032.30 and 1,663.02

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Solution

The fourth proportional to 2,921.85, 4,032.30 and 1,663.02 is: 2,295.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.85 : 4,032.30 = 1,663.02 : x
  2. Step 2: Convert to fraction form
    2,921.85/4,032.30 = 1,663.02/x
  3. Step 3: Cross multiply
    2,921.85x = 4,032.30 × 1,663.02
  4. Step 4: Simplify right side
    2,921.85x = 6,705,795.55
  5. Step 5: Solve for x
    x = 6,705,795.55/2,921.85
  6. Step 6: Final answer
    x = 2,295.05

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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.