Home / 1,539.15-2,305.31-1,149.63

Finding the Fourth Proportional to 1,539.15, 2,305.31 and 1,149.63

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Solution

The fourth proportional to 1,539.15, 2,305.31 and 1,149.63 is: 1,721.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.15 : 2,305.31 = 1,149.63 : x
  2. Step 2: Convert to fraction form
    1,539.15/2,305.31 = 1,149.63/x
  3. Step 3: Cross multiply
    1,539.15x = 2,305.31 × 1,149.63
  4. Step 4: Simplify right side
    1,539.15x = 2,650,247.79
  5. Step 5: Solve for x
    x = 2,650,247.79/1,539.15
  6. Step 6: Final answer
    x = 1,721.89

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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.