Home / 2,985.66-4,479.39-1,205.81

Finding the Fourth Proportional to 2,985.66, 4,479.39 and 1,205.81

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Solution

The fourth proportional to 2,985.66, 4,479.39 and 1,205.81 is: 1,809.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.66 : 4,479.39 = 1,205.81 : x
  2. Step 2: Convert to fraction form
    2,985.66/4,479.39 = 1,205.81/x
  3. Step 3: Cross multiply
    2,985.66x = 4,479.39 × 1,205.81
  4. Step 4: Simplify right side
    2,985.66x = 5,401,270.86
  5. Step 5: Solve for x
    x = 5,401,270.86/2,985.66
  6. Step 6: Final answer
    x = 1,809.07

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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.