Home / 4,685.56-7,028.40-1,397.90

Finding the Fourth Proportional to 4,685.56, 7,028.40 and 1,397.90

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Solution

The fourth proportional to 4,685.56, 7,028.40 and 1,397.90 is: 2,096.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,685.56 : 7,028.40 = 1,397.90 : x
  2. Step 2: Convert to fraction form
    4,685.56/7,028.40 = 1,397.90/x
  3. Step 3: Cross multiply
    4,685.56x = 7,028.40 × 1,397.90
  4. Step 4: Simplify right side
    4,685.56x = 9,825,023.17
  5. Step 5: Solve for x
    x = 9,825,023.17/4,685.56
  6. Step 6: Final answer
    x = 2,096.87

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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.