Home / 2,820.59-4,230.90-740.58

Finding the Fourth Proportional to 2,820.59, 4,230.90 and 740.58

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Solution

The fourth proportional to 2,820.59, 4,230.90 and 740.58 is: 1,110.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.59 : 4,230.90 = 740.58 : x
  2. Step 2: Convert to fraction form
    2,820.59/4,230.90 = 740.58/x
  3. Step 3: Cross multiply
    2,820.59x = 4,230.90 × 740.58
  4. Step 4: Simplify right side
    2,820.59x = 3,133,319.92
  5. Step 5: Solve for x
    x = 3,133,319.92/2,820.59
  6. Step 6: Final answer
    x = 1,110.88

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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.