Home / 3,870.60-5,338.13-2,611.45

Finding the Fourth Proportional to 3,870.60, 5,338.13 and 2,611.45

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Solution

The fourth proportional to 3,870.60, 5,338.13 and 2,611.45 is: 3,601.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.60 : 5,338.13 = 2,611.45 : x
  2. Step 2: Convert to fraction form
    3,870.60/5,338.13 = 2,611.45/x
  3. Step 3: Cross multiply
    3,870.60x = 5,338.13 × 2,611.45
  4. Step 4: Simplify right side
    3,870.60x = 13,940,259.59
  5. Step 5: Solve for x
    x = 13,940,259.59/3,870.60
  6. Step 6: Final answer
    x = 3,601.58

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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.