Home / 7,428.53-11,140.37-3,478.57

Finding the Fourth Proportional to 7,428.53, 11,140.37 and 3,478.57

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Solution

The fourth proportional to 7,428.53, 11,140.37 and 3,478.57 is: 5,216.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.53 : 11,140.37 = 3,478.57 : x
  2. Step 2: Convert to fraction form
    7,428.53/11,140.37 = 3,478.57/x
  3. Step 3: Cross multiply
    7,428.53x = 11,140.37 × 3,478.57
  4. Step 4: Simplify right side
    7,428.53x = 38,752,520.32
  5. Step 5: Solve for x
    x = 38,752,520.32/7,428.53
  6. Step 6: Final answer
    x = 5,216.71

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1.5x scale

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.