Home / 8,139.56-12,210.06-4,440.20

Finding the Fourth Proportional to 8,139.56, 12,210.06 and 4,440.20

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Solution

The fourth proportional to 8,139.56, 12,210.06 and 4,440.20 is: 6,660.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.56 : 12,210.06 = 4,440.20 : x
  2. Step 2: Convert to fraction form
    8,139.56/12,210.06 = 4,440.20/x
  3. Step 3: Cross multiply
    8,139.56x = 12,210.06 × 4,440.20
  4. Step 4: Simplify right side
    8,139.56x = 54,215,108.41
  5. Step 5: Solve for x
    x = 54,215,108.41/8,139.56
  6. Step 6: Final answer
    x = 6,660.69

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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.