Home / 3,317.38-4,576.45-2,121.80

Finding the Fourth Proportional to 3,317.38, 4,576.45 and 2,121.80

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Solution

The fourth proportional to 3,317.38, 4,576.45 and 2,121.80 is: 2,927.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.38 : 4,576.45 = 2,121.80 : x
  2. Step 2: Convert to fraction form
    3,317.38/4,576.45 = 2,121.80/x
  3. Step 3: Cross multiply
    3,317.38x = 4,576.45 × 2,121.80
  4. Step 4: Simplify right side
    3,317.38x = 9,710,287.40
  5. Step 5: Solve for x
    x = 9,710,287.40/3,317.38
  6. Step 6: Final answer
    x = 2,927.10

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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.