Home / 3,897.67-5,377.04-2,405.65

Finding the Fourth Proportional to 3,897.67, 5,377.04 and 2,405.65

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Solution

The fourth proportional to 3,897.67, 5,377.04 and 2,405.65 is: 3,318.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897.67 : 5,377.04 = 2,405.65 : x
  2. Step 2: Convert to fraction form
    3,897.67/5,377.04 = 2,405.65/x
  3. Step 3: Cross multiply
    3,897.67x = 5,377.04 × 2,405.65
  4. Step 4: Simplify right side
    3,897.67x = 12,935,264.25
  5. Step 5: Solve for x
    x = 12,935,264.25/3,897.67
  6. Step 6: Final answer
    x = 3,318.72

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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.