Home / 9,145.38-13,715.36-3,880.32

Finding the Fourth Proportional to 9,145.38, 13,715.36 and 3,880.32

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Solution

The fourth proportional to 9,145.38, 13,715.36 and 3,880.32 is: 5,819.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.38 : 13,715.36 = 3,880.32 : x
  2. Step 2: Convert to fraction form
    9,145.38/13,715.36 = 3,880.32/x
  3. Step 3: Cross multiply
    9,145.38x = 13,715.36 × 3,880.32
  4. Step 4: Simplify right side
    9,145.38x = 53,219,985.72
  5. Step 5: Solve for x
    x = 53,219,985.72/9,145.38
  6. Step 6: Final answer
    x = 5,819.33

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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.