Home / 6,420.16-8,860.99-3,731.75

Finding the Fourth Proportional to 6,420.16, 8,860.99 and 3,731.75

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Solution

The fourth proportional to 6,420.16, 8,860.99 and 3,731.75 is: 5,150.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.16 : 8,860.99 = 3,731.75 : x
  2. Step 2: Convert to fraction form
    6,420.16/8,860.99 = 3,731.75/x
  3. Step 3: Cross multiply
    6,420.16x = 8,860.99 × 3,731.75
  4. Step 4: Simplify right side
    6,420.16x = 33,066,945.80
  5. Step 5: Solve for x
    x = 33,066,945.80/6,420.16
  6. Step 6: Final answer
    x = 5,150.49

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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.