Home / 8,638.96-11,922.36-5,657.44

Finding the Fourth Proportional to 8,638.96, 11,922.36 and 5,657.44

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Solution

The fourth proportional to 8,638.96, 11,922.36 and 5,657.44 is: 7,807.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.96 : 11,922.36 = 5,657.44 : x
  2. Step 2: Convert to fraction form
    8,638.96/11,922.36 = 5,657.44/x
  3. Step 3: Cross multiply
    8,638.96x = 11,922.36 × 5,657.44
  4. Step 4: Simplify right side
    8,638.96x = 67,450,036.36
  5. Step 5: Solve for x
    x = 67,450,036.36/8,638.96
  6. Step 6: Final answer
    x = 7,807.66

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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.