Home / 6,439.12-8,888.72-4,202.91

Finding the Fourth Proportional to 6,439.12, 8,888.72 and 4,202.91

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Solution

The fourth proportional to 6,439.12, 8,888.72 and 4,202.91 is: 5,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.12 : 8,888.72 = 4,202.91 : x
  2. Step 2: Convert to fraction form
    6,439.12/8,888.72 = 4,202.91/x
  3. Step 3: Cross multiply
    6,439.12x = 8,888.72 × 4,202.91
  4. Step 4: Simplify right side
    6,439.12x = 37,358,469.16
  5. Step 5: Solve for x
    x = 37,358,469.16/6,439.12
  6. Step 6: Final answer
    x = 5,801.80

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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.