Home / 8,211.60-12,280.80-6,018.12

Finding the Fourth Proportional to 8,211.60, 12,280.80 and 6,018.12

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Solution

The fourth proportional to 8,211.60, 12,280.80 and 6,018.12 is: 9,000.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.60 : 12,280.80 = 6,018.12 : x
  2. Step 2: Convert to fraction form
    8,211.60/12,280.80 = 6,018.12/x
  3. Step 3: Cross multiply
    8,211.60x = 12,280.80 × 6,018.12
  4. Step 4: Simplify right side
    8,211.60x = 73,907,328.10
  5. Step 5: Solve for x
    x = 73,907,328.10/8,211.60
  6. Step 6: Final answer
    x = 9,000.36

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1.5x scale

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.