Home / 5,135.91-7,703.91-1,240.31

Finding the Fourth Proportional to 5,135.91, 7,703.91 and 1,240.31

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Solution

The fourth proportional to 5,135.91, 7,703.91 and 1,240.31 is: 1,860.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.91 : 7,703.91 = 1,240.31 : x
  2. Step 2: Convert to fraction form
    5,135.91/7,703.91 = 1,240.31/x
  3. Step 3: Cross multiply
    5,135.91x = 7,703.91 × 1,240.31
  4. Step 4: Simplify right side
    5,135.91x = 9,555,255.87
  5. Step 5: Solve for x
    x = 9,555,255.87/5,135.91
  6. Step 6: Final answer
    x = 1,860.48

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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.