Home / 5,221.64-7,205.45-2,983.20

Finding the Fourth Proportional to 5,221.64, 7,205.45 and 2,983.20

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Solution

The fourth proportional to 5,221.64, 7,205.45 and 2,983.20 is: 4,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.64 : 7,205.45 = 2,983.20 : x
  2. Step 2: Convert to fraction form
    5,221.64/7,205.45 = 2,983.20/x
  3. Step 3: Cross multiply
    5,221.64x = 7,205.45 × 2,983.20
  4. Step 4: Simplify right side
    5,221.64x = 21,495,283.52
  5. Step 5: Solve for x
    x = 21,495,283.52/5,221.64
  6. Step 6: Final answer
    x = 4,116.58

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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.