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Finding the Fourth Proportional to 2,338.15, 3,507.20 and 672.32

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Solution

The fourth proportional to 2,338.15, 3,507.20 and 672.32 is: 1,008.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,338.15 : 3,507.20 = 672.32 : x
  2. Step 2: Convert to fraction form
    2,338.15/3,507.20 = 672.32/x
  3. Step 3: Cross multiply
    2,338.15x = 3,507.20 × 672.32
  4. Step 4: Simplify right side
    2,338.15x = 2,357,939.81
  5. Step 5: Solve for x
    x = 2,357,939.81/2,338.15
  6. Step 6: Final answer
    x = 1,008.46

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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.