Home / 8,130.17-12,192.85-3,450.12

Finding the Fourth Proportional to 8,130.17, 12,192.85 and 3,450.12

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Solution

The fourth proportional to 8,130.17, 12,192.85 and 3,450.12 is: 5,174.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.17 : 12,192.85 = 3,450.12 : x
  2. Step 2: Convert to fraction form
    8,130.17/12,192.85 = 3,450.12/x
  3. Step 3: Cross multiply
    8,130.17x = 12,192.85 × 3,450.12
  4. Step 4: Simplify right side
    8,130.17x = 42,066,795.64
  5. Step 5: Solve for x
    x = 42,066,795.64/8,130.17
  6. Step 6: Final answer
    x = 5,174.16

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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.