Home / 3,646.32-5,031.70-2,153.90

Finding the Fourth Proportional to 3,646.32, 5,031.70 and 2,153.90

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Solution

The fourth proportional to 3,646.32, 5,031.70 and 2,153.90 is: 2,972.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,646.32 : 5,031.70 = 2,153.90 : x
  2. Step 2: Convert to fraction form
    3,646.32/5,031.70 = 2,153.90/x
  3. Step 3: Cross multiply
    3,646.32x = 5,031.70 × 2,153.90
  4. Step 4: Simplify right side
    3,646.32x = 10,837,778.63
  5. Step 5: Solve for x
    x = 10,837,778.63/3,646.32
  6. Step 6: Final answer
    x = 2,972.25

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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.