Home / 8,530.29-12,776.88-4,138.50

Finding the Fourth Proportional to 8,530.29, 12,776.88 and 4,138.50

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Solution

The fourth proportional to 8,530.29, 12,776.88 and 4,138.50 is: 6,198.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,530.29 : 12,776.88 = 4,138.50 : x
  2. Step 2: Convert to fraction form
    8,530.29/12,776.88 = 4,138.50/x
  3. Step 3: Cross multiply
    8,530.29x = 12,776.88 × 4,138.50
  4. Step 4: Simplify right side
    8,530.29x = 52,877,117.88
  5. Step 5: Solve for x
    x = 52,877,117.88/8,530.29
  6. Step 6: Final answer
    x = 6,198.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.