Home / 2,820.16-3,892.32-1,888.80

Finding the Fourth Proportional to 2,820.16, 3,892.32 and 1,888.80

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Solution

The fourth proportional to 2,820.16, 3,892.32 and 1,888.80 is: 2,606.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.16 : 3,892.32 = 1,888.80 : x
  2. Step 2: Convert to fraction form
    2,820.16/3,892.32 = 1,888.80/x
  3. Step 3: Cross multiply
    2,820.16x = 3,892.32 × 1,888.80
  4. Step 4: Simplify right side
    2,820.16x = 7,351,814.02
  5. Step 5: Solve for x
    x = 7,351,814.02/2,820.16
  6. Step 6: Final answer
    x = 2,606.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.