Home / 1,989.16-2,983.77-602.56

Finding the Fourth Proportional to 1,989.16, 2,983.77 and 602.56

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Solution

The fourth proportional to 1,989.16, 2,983.77 and 602.56 is: 903.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.16 : 2,983.77 = 602.56 : x
  2. Step 2: Convert to fraction form
    1,989.16/2,983.77 = 602.56/x
  3. Step 3: Cross multiply
    1,989.16x = 2,983.77 × 602.56
  4. Step 4: Simplify right side
    1,989.16x = 1,797,900.45
  5. Step 5: Solve for x
    x = 1,797,900.45/1,989.16
  6. Step 6: Final answer
    x = 903.85

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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.