Home / 2,128.13-3,192.20-973.07

Finding the Fourth Proportional to 2,128.13, 3,192.20 and 973.07

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Solution

The fourth proportional to 2,128.13, 3,192.20 and 973.07 is: 1,459.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.13 : 3,192.20 = 973.07 : x
  2. Step 2: Convert to fraction form
    2,128.13/3,192.20 = 973.07/x
  3. Step 3: Cross multiply
    2,128.13x = 3,192.20 × 973.07
  4. Step 4: Simplify right side
    2,128.13x = 3,106,234.05
  5. Step 5: Solve for x
    x = 3,106,234.05/2,128.13
  6. Step 6: Final answer
    x = 1,459.61

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Similar ratio
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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.