Home / 3,931.61-5,419.80-2,515.14

Finding the Fourth Proportional to 3,931.61, 5,419.80 and 2,515.14

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Solution

The fourth proportional to 3,931.61, 5,419.80 and 2,515.14 is: 3,467.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.61 : 5,419.80 = 2,515.14 : x
  2. Step 2: Convert to fraction form
    3,931.61/5,419.80 = 2,515.14/x
  3. Step 3: Cross multiply
    3,931.61x = 5,419.80 × 2,515.14
  4. Step 4: Simplify right side
    3,931.61x = 13,631,555.77
  5. Step 5: Solve for x
    x = 13,631,555.77/3,931.61
  6. Step 6: Final answer
    x = 3,467.17

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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.