Home / 9,328.78-12,865.26-6,179.50

Finding the Fourth Proportional to 9,328.78, 12,865.26 and 6,179.50

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Solution

The fourth proportional to 9,328.78, 12,865.26 and 6,179.50 is: 8,522.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.78 : 12,865.26 = 6,179.50 : x
  2. Step 2: Convert to fraction form
    9,328.78/12,865.26 = 6,179.50/x
  3. Step 3: Cross multiply
    9,328.78x = 12,865.26 × 6,179.50
  4. Step 4: Simplify right side
    9,328.78x = 79,500,874.17
  5. Step 5: Solve for x
    x = 79,500,874.17/9,328.78
  6. Step 6: Final answer
    x = 8,522.11

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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.