Home / 5,409.16-8,102.80-4,172.29

Finding the Fourth Proportional to 5,409.16, 8,102.80 and 4,172.29

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Solution

The fourth proportional to 5,409.16, 8,102.80 and 4,172.29 is: 6,249.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.16 : 8,102.80 = 4,172.29 : x
  2. Step 2: Convert to fraction form
    5,409.16/8,102.80 = 4,172.29/x
  3. Step 3: Cross multiply
    5,409.16x = 8,102.80 × 4,172.29
  4. Step 4: Simplify right side
    5,409.16x = 33,807,170.04
  5. Step 5: Solve for x
    x = 33,807,170.04/5,409.16
  6. Step 6: Final answer
    x = 6,249.99

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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.