Home / 7,138.12-9,855.30-4,348.36

Finding the Fourth Proportional to 7,138.12, 9,855.30 and 4,348.36

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Solution

The fourth proportional to 7,138.12, 9,855.30 and 4,348.36 is: 6,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.12 : 9,855.30 = 4,348.36 : x
  2. Step 2: Convert to fraction form
    7,138.12/9,855.30 = 4,348.36/x
  3. Step 3: Cross multiply
    7,138.12x = 9,855.30 × 4,348.36
  4. Step 4: Simplify right side
    7,138.12x = 42,854,392.31
  5. Step 5: Solve for x
    x = 42,854,392.31/7,138.12
  6. Step 6: Final answer
    x = 6,003.60

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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.