Home / 2,820.33-4,230.39-740.32

Finding the Fourth Proportional to 2,820.33, 4,230.39 and 740.32

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Solution

The fourth proportional to 2,820.33, 4,230.39 and 740.32 is: 1,110.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.33 : 4,230.39 = 740.32 : x
  2. Step 2: Convert to fraction form
    2,820.33/4,230.39 = 740.32/x
  3. Step 3: Cross multiply
    2,820.33x = 4,230.39 × 740.32
  4. Step 4: Simplify right side
    2,820.33x = 3,131,842.32
  5. Step 5: Solve for x
    x = 3,131,842.32/2,820.33
  6. Step 6: Final answer
    x = 1,110.45

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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.