Home / 3,869.10-5,339.37-2,275.67

Finding the Fourth Proportional to 3,869.10, 5,339.37 and 2,275.67

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Solution

The fourth proportional to 3,869.10, 5,339.37 and 2,275.67 is: 3,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.10 : 5,339.37 = 2,275.67 : x
  2. Step 2: Convert to fraction form
    3,869.10/5,339.37 = 2,275.67/x
  3. Step 3: Cross multiply
    3,869.10x = 5,339.37 × 2,275.67
  4. Step 4: Simplify right side
    3,869.10x = 12,150,617.43
  5. Step 5: Solve for x
    x = 12,150,617.43/3,869.10
  6. Step 6: Final answer
    x = 3,140.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.