Home / 8,157.40-11,257.86-4,621.48

Finding the Fourth Proportional to 8,157.40, 11,257.86 and 4,621.48

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Solution

The fourth proportional to 8,157.40, 11,257.86 and 4,621.48 is: 6,378.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.40 : 11,257.86 = 4,621.48 : x
  2. Step 2: Convert to fraction form
    8,157.40/11,257.86 = 4,621.48/x
  3. Step 3: Cross multiply
    8,157.40x = 11,257.86 × 4,621.48
  4. Step 4: Simplify right side
    8,157.40x = 52,027,974.83
  5. Step 5: Solve for x
    x = 52,027,974.83/8,157.40
  6. Step 6: Final answer
    x = 6,378.01

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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.