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Finding the Fourth Proportional to 7,115.04, 9,819.36 and 4,322.16

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Solution

The fourth proportional to 7,115.04, 9,819.36 and 4,322.16 is: 5,964.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.04 : 9,819.36 = 4,322.16 : x
  2. Step 2: Convert to fraction form
    7,115.04/9,819.36 = 4,322.16/x
  3. Step 3: Cross multiply
    7,115.04x = 9,819.36 × 4,322.16
  4. Step 4: Simplify right side
    7,115.04x = 42,440,845.02
  5. Step 5: Solve for x
    x = 42,440,845.02/7,115.04
  6. Step 6: Final answer
    x = 5,964.95

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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.