Home / 8,415.77-12,621.83-3,150.56

Finding the Fourth Proportional to 8,415.77, 12,621.83 and 3,150.56

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Solution

The fourth proportional to 8,415.77, 12,621.83 and 3,150.56 is: 4,725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.77 : 12,621.83 = 3,150.56 : x
  2. Step 2: Convert to fraction form
    8,415.77/12,621.83 = 3,150.56/x
  3. Step 3: Cross multiply
    8,415.77x = 12,621.83 × 3,150.56
  4. Step 4: Simplify right side
    8,415.77x = 39,765,848.53
  5. Step 5: Solve for x
    x = 39,765,848.53/8,415.77
  6. Step 6: Final answer
    x = 4,725.16

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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.