Home / 2,921.41-4,031.52-1,801.90

Finding the Fourth Proportional to 2,921.41, 4,031.52 and 1,801.90

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Solution

The fourth proportional to 2,921.41, 4,031.52 and 1,801.90 is: 2,486.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.41 : 4,031.52 = 1,801.90 : x
  2. Step 2: Convert to fraction form
    2,921.41/4,031.52 = 1,801.90/x
  3. Step 3: Cross multiply
    2,921.41x = 4,031.52 × 1,801.90
  4. Step 4: Simplify right side
    2,921.41x = 7,264,386.88
  5. Step 5: Solve for x
    x = 7,264,386.88/2,921.41
  6. Step 6: Final answer
    x = 2,486.60

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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.