Home / 5,135.82-7,703.65-1,240.20

Finding the Fourth Proportional to 5,135.82, 7,703.65 and 1,240.20

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Solution

The fourth proportional to 5,135.82, 7,703.65 and 1,240.20 is: 1,860.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.82 : 7,703.65 = 1,240.20 : x
  2. Step 2: Convert to fraction form
    5,135.82/7,703.65 = 1,240.20/x
  3. Step 3: Cross multiply
    5,135.82x = 7,703.65 × 1,240.20
  4. Step 4: Simplify right side
    5,135.82x = 9,554,066.73
  5. Step 5: Solve for x
    x = 9,554,066.73/5,135.82
  6. Step 6: Final answer
    x = 1,860.28

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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.