Home / 6,987.16-9,642.09-3,843.36

Finding the Fourth Proportional to 6,987.16, 9,642.09 and 3,843.36

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Solution

The fourth proportional to 6,987.16, 9,642.09 and 3,843.36 is: 5,303.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.16 : 9,642.09 = 3,843.36 : x
  2. Step 2: Convert to fraction form
    6,987.16/9,642.09 = 3,843.36/x
  3. Step 3: Cross multiply
    6,987.16x = 9,642.09 × 3,843.36
  4. Step 4: Simplify right side
    6,987.16x = 37,058,023.02
  5. Step 5: Solve for x
    x = 37,058,023.02/6,987.16
  6. Step 6: Final answer
    x = 5,303.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.