Home / 8,439.84-12,630.60-5,510.88

Finding the Fourth Proportional to 8,439.84, 12,630.60 and 5,510.88

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Solution

The fourth proportional to 8,439.84, 12,630.60 and 5,510.88 is: 8,247.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.84 : 12,630.60 = 5,510.88 : x
  2. Step 2: Convert to fraction form
    8,439.84/12,630.60 = 5,510.88/x
  3. Step 3: Cross multiply
    8,439.84x = 12,630.60 × 5,510.88
  4. Step 4: Simplify right side
    8,439.84x = 69,605,720.93
  5. Step 5: Solve for x
    x = 69,605,720.93/8,439.84
  6. Step 6: Final answer
    x = 8,247.28

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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.