Home / 3,610.96-5,416.20-1,420.06

Finding the Fourth Proportional to 3,610.96, 5,416.20 and 1,420.06

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Solution

The fourth proportional to 3,610.96, 5,416.20 and 1,420.06 is: 2,130.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,610.96 : 5,416.20 = 1,420.06 : x
  2. Step 2: Convert to fraction form
    3,610.96/5,416.20 = 1,420.06/x
  3. Step 3: Cross multiply
    3,610.96x = 5,416.20 × 1,420.06
  4. Step 4: Simplify right side
    3,610.96x = 7,691,328.97
  5. Step 5: Solve for x
    x = 7,691,328.97/3,610.96
  6. Step 6: Final answer
    x = 2,130.00

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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.