Home / 5,305.15-7,320.34-3,180.21

Finding the Fourth Proportional to 5,305.15, 7,320.34 and 3,180.21

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Solution

The fourth proportional to 5,305.15, 7,320.34 and 3,180.21 is: 4,388.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,305.15 : 7,320.34 = 3,180.21 : x
  2. Step 2: Convert to fraction form
    5,305.15/7,320.34 = 3,180.21/x
  3. Step 3: Cross multiply
    5,305.15x = 7,320.34 × 3,180.21
  4. Step 4: Simplify right side
    5,305.15x = 23,280,218.47
  5. Step 5: Solve for x
    x = 23,280,218.47/5,305.15
  6. Step 6: Final answer
    x = 4,388.23

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1.5x scale

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.