Home / 3,109.23-4,663.80-1,260.30

Finding the Fourth Proportional to 3,109.23, 4,663.80 and 1,260.30

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Solution

The fourth proportional to 3,109.23, 4,663.80 and 1,260.30 is: 1,890.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.23 : 4,663.80 = 1,260.30 : x
  2. Step 2: Convert to fraction form
    3,109.23/4,663.80 = 1,260.30/x
  3. Step 3: Cross multiply
    3,109.23x = 4,663.80 × 1,260.30
  4. Step 4: Simplify right side
    3,109.23x = 5,877,787.14
  5. Step 5: Solve for x
    x = 5,877,787.14/3,109.23
  6. Step 6: Final answer
    x = 1,890.43

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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.