Home / 7,125.91-10,686.99-2,127.11

Finding the Fourth Proportional to 7,125.91, 10,686.99 and 2,127.11

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Solution

The fourth proportional to 7,125.91, 10,686.99 and 2,127.11 is: 3,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.91 : 10,686.99 = 2,127.11 : x
  2. Step 2: Convert to fraction form
    7,125.91/10,686.99 = 2,127.11/x
  3. Step 3: Cross multiply
    7,125.91x = 10,686.99 × 2,127.11
  4. Step 4: Simplify right side
    7,125.91x = 22,732,349.86
  5. Step 5: Solve for x
    x = 22,732,349.86/7,125.91
  6. Step 6: Final answer
    x = 3,190.10

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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.