Home / 6,983.80-9,639.12-4,429.91

Finding the Fourth Proportional to 6,983.80, 9,639.12 and 4,429.91

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Solution

The fourth proportional to 6,983.80, 9,639.12 and 4,429.91 is: 6,114.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,983.80 : 9,639.12 = 4,429.91 : x
  2. Step 2: Convert to fraction form
    6,983.80/9,639.12 = 4,429.91/x
  3. Step 3: Cross multiply
    6,983.80x = 9,639.12 × 4,429.91
  4. Step 4: Simplify right side
    6,983.80x = 42,700,434.08
  5. Step 5: Solve for x
    x = 42,700,434.08/6,983.80
  6. Step 6: Final answer
    x = 6,114.21

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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.