Home / 5,439.75-8,118.53-4,914.87

Finding the Fourth Proportional to 5,439.75, 8,118.53 and 4,914.87

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Solution

The fourth proportional to 5,439.75, 8,118.53 and 4,914.87 is: 7,335.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.75 : 8,118.53 = 4,914.87 : x
  2. Step 2: Convert to fraction form
    5,439.75/8,118.53 = 4,914.87/x
  3. Step 3: Cross multiply
    5,439.75x = 8,118.53 × 4,914.87
  4. Step 4: Simplify right side
    5,439.75x = 39,901,494.97
  5. Step 5: Solve for x
    x = 39,901,494.97/5,439.75
  6. Step 6: Final answer
    x = 7,335.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.