Home / 2,777.20-4,165.72-1,133.28

Finding the Fourth Proportional to 2,777.20, 4,165.72 and 1,133.28

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Solution

The fourth proportional to 2,777.20, 4,165.72 and 1,133.28 is: 1,699.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,777.20 : 4,165.72 = 1,133.28 : x
  2. Step 2: Convert to fraction form
    2,777.20/4,165.72 = 1,133.28/x
  3. Step 3: Cross multiply
    2,777.20x = 4,165.72 × 1,133.28
  4. Step 4: Simplify right side
    2,777.20x = 4,720,927.16
  5. Step 5: Solve for x
    x = 4,720,927.16/2,777.20
  6. Step 6: Final answer
    x = 1,699.89

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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.