Home / 5,139.18-7,709.31-1,677.06

Finding the Fourth Proportional to 5,139.18, 7,709.31 and 1,677.06

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Solution

The fourth proportional to 5,139.18, 7,709.31 and 1,677.06 is: 2,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.18 : 7,709.31 = 1,677.06 : x
  2. Step 2: Convert to fraction form
    5,139.18/7,709.31 = 1,677.06/x
  3. Step 3: Cross multiply
    5,139.18x = 7,709.31 × 1,677.06
  4. Step 4: Simplify right side
    5,139.18x = 12,928,975.43
  5. Step 5: Solve for x
    x = 12,928,975.43/5,139.18
  6. Step 6: Final answer
    x = 2,515.77

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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.