Home / 7,142.82-9,855.91-4,488.35

Finding the Fourth Proportional to 7,142.82, 9,855.91 and 4,488.35

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Solution

The fourth proportional to 7,142.82, 9,855.91 and 4,488.35 is: 6,193.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.82 : 9,855.91 = 4,488.35 : x
  2. Step 2: Convert to fraction form
    7,142.82/9,855.91 = 4,488.35/x
  3. Step 3: Cross multiply
    7,142.82x = 9,855.91 × 4,488.35
  4. Step 4: Simplify right side
    7,142.82x = 44,236,735.59
  5. Step 5: Solve for x
    x = 44,236,735.59/7,142.82
  6. Step 6: Final answer
    x = 6,193.18

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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.