Home / 8,720.30-12,033.24-4,839.80

Finding the Fourth Proportional to 8,720.30, 12,033.24 and 4,839.80

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Solution

The fourth proportional to 8,720.30, 12,033.24 and 4,839.80 is: 6,678.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.30 : 12,033.24 = 4,839.80 : x
  2. Step 2: Convert to fraction form
    8,720.30/12,033.24 = 4,839.80/x
  3. Step 3: Cross multiply
    8,720.30x = 12,033.24 × 4,839.80
  4. Step 4: Simplify right side
    8,720.30x = 58,238,450.75
  5. Step 5: Solve for x
    x = 58,238,450.75/8,720.30
  6. Step 6: Final answer
    x = 6,678.50

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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.