Home / 5,165.80-7,752.30-3,321.40

Finding the Fourth Proportional to 5,165.80, 7,752.30 and 3,321.40

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Solution

The fourth proportional to 5,165.80, 7,752.30 and 3,321.40 is: 4,984.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.80 : 7,752.30 = 3,321.40 : x
  2. Step 2: Convert to fraction form
    5,165.80/7,752.30 = 3,321.40/x
  3. Step 3: Cross multiply
    5,165.80x = 7,752.30 × 3,321.40
  4. Step 4: Simplify right side
    5,165.80x = 25,748,489.22
  5. Step 5: Solve for x
    x = 25,748,489.22/5,165.80
  6. Step 6: Final answer
    x = 4,984.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.