Home / 8,721.81-12,029.58-6,704.91

Finding the Fourth Proportional to 8,721.81, 12,029.58 and 6,704.91

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Solution

The fourth proportional to 8,721.81, 12,029.58 and 6,704.91 is: 9,247.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.81 : 12,029.58 = 6,704.91 : x
  2. Step 2: Convert to fraction form
    8,721.81/12,029.58 = 6,704.91/x
  3. Step 3: Cross multiply
    8,721.81x = 12,029.58 × 6,704.91
  4. Step 4: Simplify right side
    8,721.81x = 80,657,251.24
  5. Step 5: Solve for x
    x = 80,657,251.24/8,721.81
  6. Step 6: Final answer
    x = 9,247.77

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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.