Home / 8,701.98-11,999.65-5,164.51

Finding the Fourth Proportional to 8,701.98, 11,999.65 and 5,164.51

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Solution

The fourth proportional to 8,701.98, 11,999.65 and 5,164.51 is: 7,121.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.98 : 11,999.65 = 5,164.51 : x
  2. Step 2: Convert to fraction form
    8,701.98/11,999.65 = 5,164.51/x
  3. Step 3: Cross multiply
    8,701.98x = 11,999.65 × 5,164.51
  4. Step 4: Simplify right side
    8,701.98x = 61,972,252.42
  5. Step 5: Solve for x
    x = 61,972,252.42/8,701.98
  6. Step 6: Final answer
    x = 7,121.63

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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.