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Finding the Fourth Proportional to 3,653.22, 5,479.89 and 1,313.37

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Solution

The fourth proportional to 3,653.22, 5,479.89 and 1,313.37 is: 1,970.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.22 : 5,479.89 = 1,313.37 : x
  2. Step 2: Convert to fraction form
    3,653.22/5,479.89 = 1,313.37/x
  3. Step 3: Cross multiply
    3,653.22x = 5,479.89 × 1,313.37
  4. Step 4: Simplify right side
    3,653.22x = 7,197,123.13
  5. Step 5: Solve for x
    x = 7,197,123.13/3,653.22
  6. Step 6: Final answer
    x = 1,970.08

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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.