Home / 3,345.90-5,013.45-2,190.30

Finding the Fourth Proportional to 3,345.90, 5,013.45 and 2,190.30

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Solution

The fourth proportional to 3,345.90, 5,013.45 and 2,190.30 is: 3,281.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,345.90 : 5,013.45 = 2,190.30 : x
  2. Step 2: Convert to fraction form
    3,345.90/5,013.45 = 2,190.30/x
  3. Step 3: Cross multiply
    3,345.90x = 5,013.45 × 2,190.30
  4. Step 4: Simplify right side
    3,345.90x = 10,980,959.54
  5. Step 5: Solve for x
    x = 10,980,959.54/3,345.90
  6. Step 6: Final answer
    x = 3,281.92

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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.