Home / 2,985.28-4,478.20-1,135.89

Finding the Fourth Proportional to 2,985.28, 4,478.20 and 1,135.89

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Solution

The fourth proportional to 2,985.28, 4,478.20 and 1,135.89 is: 1,703.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.28 : 4,478.20 = 1,135.89 : x
  2. Step 2: Convert to fraction form
    2,985.28/4,478.20 = 1,135.89/x
  3. Step 3: Cross multiply
    2,985.28x = 4,478.20 × 1,135.89
  4. Step 4: Simplify right side
    2,985.28x = 5,086,739.76
  5. Step 5: Solve for x
    x = 5,086,739.76/2,985.28
  6. Step 6: Final answer
    x = 1,703.94

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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.