Home / 9,988.44-13,782.80-5,511.84

Finding the Fourth Proportional to 9,988.44, 13,782.80 and 5,511.84

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Solution

The fourth proportional to 9,988.44, 13,782.80 and 5,511.84 is: 7,605.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.44 : 13,782.80 = 5,511.84 : x
  2. Step 2: Convert to fraction form
    9,988.44/13,782.80 = 5,511.84/x
  3. Step 3: Cross multiply
    9,988.44x = 13,782.80 × 5,511.84
  4. Step 4: Simplify right side
    9,988.44x = 75,968,588.35
  5. Step 5: Solve for x
    x = 75,968,588.35/9,988.44
  6. Step 6: Final answer
    x = 7,605.65

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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.