Home / 8,990.19-13,486.84-5,290.38

Finding the Fourth Proportional to 8,990.19, 13,486.84 and 5,290.38

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Solution

The fourth proportional to 8,990.19, 13,486.84 and 5,290.38 is: 7,936.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.19 : 13,486.84 = 5,290.38 : x
  2. Step 2: Convert to fraction form
    8,990.19/13,486.84 = 5,290.38/x
  3. Step 3: Cross multiply
    8,990.19x = 13,486.84 × 5,290.38
  4. Step 4: Simplify right side
    8,990.19x = 71,350,495.37
  5. Step 5: Solve for x
    x = 71,350,495.37/8,990.19
  6. Step 6: Final answer
    x = 7,936.48

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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.