Home / 8,415.87-11,611.85-5,061.25

Finding the Fourth Proportional to 8,415.87, 11,611.85 and 5,061.25

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Solution

The fourth proportional to 8,415.87, 11,611.85 and 5,061.25 is: 6,983.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.87 : 11,611.85 = 5,061.25 : x
  2. Step 2: Convert to fraction form
    8,415.87/11,611.85 = 5,061.25/x
  3. Step 3: Cross multiply
    8,415.87x = 11,611.85 × 5,061.25
  4. Step 4: Simplify right side
    8,415.87x = 58,770,475.81
  5. Step 5: Solve for x
    x = 58,770,475.81/8,415.87
  6. Step 6: Final answer
    x = 6,983.29

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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.