Home / 8,627.15-11,905.30-5,439.80

Finding the Fourth Proportional to 8,627.15, 11,905.30 and 5,439.80

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Solution

The fourth proportional to 8,627.15, 11,905.30 and 5,439.80 is: 7,506.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,627.15 : 11,905.30 = 5,439.80 : x
  2. Step 2: Convert to fraction form
    8,627.15/11,905.30 = 5,439.80/x
  3. Step 3: Cross multiply
    8,627.15x = 11,905.30 × 5,439.80
  4. Step 4: Simplify right side
    8,627.15x = 64,762,450.94
  5. Step 5: Solve for x
    x = 64,762,450.94/8,627.15
  6. Step 6: Final answer
    x = 7,506.82

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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.