Home / 3,990.62-5,506.86-3,047.08

Finding the Fourth Proportional to 3,990.62, 5,506.86 and 3,047.08

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Solution

The fourth proportional to 3,990.62, 5,506.86 and 3,047.08 is: 4,204.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.62 : 5,506.86 = 3,047.08 : x
  2. Step 2: Convert to fraction form
    3,990.62/5,506.86 = 3,047.08/x
  3. Step 3: Cross multiply
    3,990.62x = 5,506.86 × 3,047.08
  4. Step 4: Simplify right side
    3,990.62x = 16,779,842.97
  5. Step 5: Solve for x
    x = 16,779,842.97/3,990.62
  6. Step 6: Final answer
    x = 4,204.82

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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.