Home / 3,406.16-5,111.40-3,285.20

Finding the Fourth Proportional to 3,406.16, 5,111.40 and 3,285.20

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Solution

The fourth proportional to 3,406.16, 5,111.40 and 3,285.20 is: 4,929.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,406.16 : 5,111.40 = 3,285.20 : x
  2. Step 2: Convert to fraction form
    3,406.16/5,111.40 = 3,285.20/x
  3. Step 3: Cross multiply
    3,406.16x = 5,111.40 × 3,285.20
  4. Step 4: Simplify right side
    3,406.16x = 16,791,971.28
  5. Step 5: Solve for x
    x = 16,791,971.28/3,406.16
  6. Step 6: Final answer
    x = 4,929.88

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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.