Home / 8,690.09-11,987.80-5,154.44

Finding the Fourth Proportional to 8,690.09, 11,987.80 and 5,154.44

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Solution

The fourth proportional to 8,690.09, 11,987.80 and 5,154.44 is: 7,110.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.09 : 11,987.80 = 5,154.44 : x
  2. Step 2: Convert to fraction form
    8,690.09/11,987.80 = 5,154.44/x
  3. Step 3: Cross multiply
    8,690.09x = 11,987.80 × 5,154.44
  4. Step 4: Simplify right side
    8,690.09x = 61,790,323.01
  5. Step 5: Solve for x
    x = 61,790,323.01/8,690.09
  6. Step 6: Final answer
    x = 7,110.44

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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.