Home / 8,145.35-12,219.57-2,807.11

Finding the Fourth Proportional to 8,145.35, 12,219.57 and 2,807.11

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Solution

The fourth proportional to 8,145.35, 12,219.57 and 2,807.11 is: 4,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.35 : 12,219.57 = 2,807.11 : x
  2. Step 2: Convert to fraction form
    8,145.35/12,219.57 = 2,807.11/x
  3. Step 3: Cross multiply
    8,145.35x = 12,219.57 × 2,807.11
  4. Step 4: Simplify right side
    8,145.35x = 34,301,677.14
  5. Step 5: Solve for x
    x = 34,301,677.14/8,145.35
  6. Step 6: Final answer
    x = 4,211.20

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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.