Home / 8,991.51-13,478.56-3,440.58

Finding the Fourth Proportional to 8,991.51, 13,478.56 and 3,440.58

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Solution

The fourth proportional to 8,991.51, 13,478.56 and 3,440.58 is: 5,157.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.51 : 13,478.56 = 3,440.58 : x
  2. Step 2: Convert to fraction form
    8,991.51/13,478.56 = 3,440.58/x
  3. Step 3: Cross multiply
    8,991.51x = 13,478.56 × 3,440.58
  4. Step 4: Simplify right side
    8,991.51x = 46,374,063.96
  5. Step 5: Solve for x
    x = 46,374,063.96/8,991.51
  6. Step 6: Final answer
    x = 5,157.54

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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.