Home / 3,120.15-4,686.71-2,475.39

Finding the Fourth Proportional to 3,120.15, 4,686.71 and 2,475.39

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Solution

The fourth proportional to 3,120.15, 4,686.71 and 2,475.39 is: 3,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.15 : 4,686.71 = 2,475.39 : x
  2. Step 2: Convert to fraction form
    3,120.15/4,686.71 = 2,475.39/x
  3. Step 3: Cross multiply
    3,120.15x = 4,686.71 × 2,475.39
  4. Step 4: Simplify right side
    3,120.15x = 11,601,422.69
  5. Step 5: Solve for x
    x = 11,601,422.69/3,120.15
  6. Step 6: Final answer
    x = 3,718.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.