Home / 3,817.65-5,270.90-2,931.87

Finding the Fourth Proportional to 3,817.65, 5,270.90 and 2,931.87

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Solution

The fourth proportional to 3,817.65, 5,270.90 and 2,931.87 is: 4,047.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,817.65 : 5,270.90 = 2,931.87 : x
  2. Step 2: Convert to fraction form
    3,817.65/5,270.90 = 2,931.87/x
  3. Step 3: Cross multiply
    3,817.65x = 5,270.90 × 2,931.87
  4. Step 4: Simplify right side
    3,817.65x = 15,453,578.92
  5. Step 5: Solve for x
    x = 15,453,578.92/3,817.65
  6. Step 6: Final answer
    x = 4,047.93

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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.