Home / 3,124.85-4,688.49-2,869.70

Finding the Fourth Proportional to 3,124.85, 4,688.49 and 2,869.70

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Solution

The fourth proportional to 3,124.85, 4,688.49 and 2,869.70 is: 4,305.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.85 : 4,688.49 = 2,869.70 : x
  2. Step 2: Convert to fraction form
    3,124.85/4,688.49 = 2,869.70/x
  3. Step 3: Cross multiply
    3,124.85x = 4,688.49 × 2,869.70
  4. Step 4: Simplify right side
    3,124.85x = 13,454,536.31
  5. Step 5: Solve for x
    x = 13,454,536.31/3,124.85
  6. Step 6: Final answer
    x = 4,305.67

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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.