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Finding the Fourth Proportional to 3,598.56, 5,398.56 and 1,290.24

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Solution

The fourth proportional to 3,598.56, 5,398.56 and 1,290.24 is: 1,935.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,598.56 : 5,398.56 = 1,290.24 : x
  2. Step 2: Convert to fraction form
    3,598.56/5,398.56 = 1,290.24/x
  3. Step 3: Cross multiply
    3,598.56x = 5,398.56 × 1,290.24
  4. Step 4: Simplify right side
    3,598.56x = 6,965,438.05
  5. Step 5: Solve for x
    x = 6,965,438.05/3,598.56
  6. Step 6: Final answer
    x = 1,935.62

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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.