Home / 2,788.02-4,174.74-1,921.32

Finding the Fourth Proportional to 2,788.02, 4,174.74 and 1,921.32

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Solution

The fourth proportional to 2,788.02, 4,174.74 and 1,921.32 is: 2,876.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.02 : 4,174.74 = 1,921.32 : x
  2. Step 2: Convert to fraction form
    2,788.02/4,174.74 = 1,921.32/x
  3. Step 3: Cross multiply
    2,788.02x = 4,174.74 × 1,921.32
  4. Step 4: Simplify right side
    2,788.02x = 8,021,011.46
  5. Step 5: Solve for x
    x = 8,021,011.46/2,788.02
  6. Step 6: Final answer
    x = 2,876.96

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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.