Home / 6,429.16-8,872.90-3,911.45

Finding the Fourth Proportional to 6,429.16, 8,872.90 and 3,911.45

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Solution

The fourth proportional to 6,429.16, 8,872.90 and 3,911.45 is: 5,398.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.16 : 8,872.90 = 3,911.45 : x
  2. Step 2: Convert to fraction form
    6,429.16/8,872.90 = 3,911.45/x
  3. Step 3: Cross multiply
    6,429.16x = 8,872.90 × 3,911.45
  4. Step 4: Simplify right side
    6,429.16x = 34,705,904.71
  5. Step 5: Solve for x
    x = 34,705,904.71/6,429.16
  6. Step 6: Final answer
    x = 5,398.20

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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.