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Finding the Fourth Proportional to 5,455.20, 7,523.91 and 4,618.20

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Solution

The fourth proportional to 5,455.20, 7,523.91 and 4,618.20 is: 6,369.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.20 : 7,523.91 = 4,618.20 : x
  2. Step 2: Convert to fraction form
    5,455.20/7,523.91 = 4,618.20/x
  3. Step 3: Cross multiply
    5,455.20x = 7,523.91 × 4,618.20
  4. Step 4: Simplify right side
    5,455.20x = 34,746,921.16
  5. Step 5: Solve for x
    x = 34,746,921.16/5,455.20
  6. Step 6: Final answer
    x = 6,369.50

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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.