Home / 5,360.20-8,040.30-5,165.80

Finding the Fourth Proportional to 5,360.20, 8,040.30 and 5,165.80

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Solution

The fourth proportional to 5,360.20, 8,040.30 and 5,165.80 is: 7,748.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,360.20 : 8,040.30 = 5,165.80 : x
  2. Step 2: Convert to fraction form
    5,360.20/8,040.30 = 5,165.80/x
  3. Step 3: Cross multiply
    5,360.20x = 8,040.30 × 5,165.80
  4. Step 4: Simplify right side
    5,360.20x = 41,534,581.74
  5. Step 5: Solve for x
    x = 41,534,581.74/5,360.20
  6. Step 6: Final answer
    x = 7,748.70

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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.