Home / 4,686.40-7,029.60-1,912.15

Finding the Fourth Proportional to 4,686.40, 7,029.60 and 1,912.15

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Solution

The fourth proportional to 4,686.40, 7,029.60 and 1,912.15 is: 2,868.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,686.40 : 7,029.60 = 1,912.15 : x
  2. Step 2: Convert to fraction form
    4,686.40/7,029.60 = 1,912.15/x
  3. Step 3: Cross multiply
    4,686.40x = 7,029.60 × 1,912.15
  4. Step 4: Simplify right side
    4,686.40x = 13,441,649.64
  5. Step 5: Solve for x
    x = 13,441,649.64/4,686.40
  6. Step 6: Final answer
    x = 2,868.23

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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.