Home / 9,987.92-13,782.98-5,511.25

Finding the Fourth Proportional to 9,987.92, 13,782.98 and 5,511.25

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Solution

The fourth proportional to 9,987.92, 13,782.98 and 5,511.25 is: 7,605.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.92 : 13,782.98 = 5,511.25 : x
  2. Step 2: Convert to fraction form
    9,987.92/13,782.98 = 5,511.25/x
  3. Step 3: Cross multiply
    9,987.92x = 13,782.98 × 5,511.25
  4. Step 4: Simplify right side
    9,987.92x = 75,961,427.85
  5. Step 5: Solve for x
    x = 75,961,427.85/9,987.92
  6. Step 6: Final answer
    x = 7,605.33

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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.