Home / 3,709.20-5,528.60-3,428.32

Finding the Fourth Proportional to 3,709.20, 5,528.60 and 3,428.32

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Solution

The fourth proportional to 3,709.20, 5,528.60 and 3,428.32 is: 5,109.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.20 : 5,528.60 = 3,428.32 : x
  2. Step 2: Convert to fraction form
    3,709.20/5,528.60 = 3,428.32/x
  3. Step 3: Cross multiply
    3,709.20x = 5,528.60 × 3,428.32
  4. Step 4: Simplify right side
    3,709.20x = 18,953,809.95
  5. Step 5: Solve for x
    x = 18,953,809.95/3,709.20
  6. Step 6: Final answer
    x = 5,109.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.