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Finding the Fourth Proportional to 1,539.32, 2,308.93 and 673.63

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Solution

The fourth proportional to 1,539.32, 2,308.93 and 673.63 is: 1,010.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.32 : 2,308.93 = 673.63 : x
  2. Step 2: Convert to fraction form
    1,539.32/2,308.93 = 673.63/x
  3. Step 3: Cross multiply
    1,539.32x = 2,308.93 × 673.63
  4. Step 4: Simplify right side
    1,539.32x = 1,555,357.06
  5. Step 5: Solve for x
    x = 1,555,357.06/1,539.32
  6. Step 6: Final answer
    x = 1,010.42

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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.