Home / 8,140.90-12,211.35-7,266.10

Finding the Fourth Proportional to 8,140.90, 12,211.35 and 7,266.10

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Solution

The fourth proportional to 8,140.90, 12,211.35 and 7,266.10 is: 10,899.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.90 : 12,211.35 = 7,266.10 : x
  2. Step 2: Convert to fraction form
    8,140.90/12,211.35 = 7,266.10/x
  3. Step 3: Cross multiply
    8,140.90x = 12,211.35 × 7,266.10
  4. Step 4: Simplify right side
    8,140.90x = 88,728,890.24
  5. Step 5: Solve for x
    x = 88,728,890.24/8,140.90
  6. Step 6: Final answer
    x = 10,899.15

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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.