Home / 3,009.02-4,512.96-817.20

Finding the Fourth Proportional to 3,009.02, 4,512.96 and 817.20

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Solution

The fourth proportional to 3,009.02, 4,512.96 and 817.20 is: 1,225.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.02 : 4,512.96 = 817.20 : x
  2. Step 2: Convert to fraction form
    3,009.02/4,512.96 = 817.20/x
  3. Step 3: Cross multiply
    3,009.02x = 4,512.96 × 817.20
  4. Step 4: Simplify right side
    3,009.02x = 3,687,990.91
  5. Step 5: Solve for x
    x = 3,687,990.91/3,009.02
  6. Step 6: Final answer
    x = 1,225.65

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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.