Home / 2,887.79-3,985.46-1,769.48

Finding the Fourth Proportional to 2,887.79, 3,985.46 and 1,769.48

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Solution

The fourth proportional to 2,887.79, 3,985.46 and 1,769.48 is: 2,442.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.79 : 3,985.46 = 1,769.48 : x
  2. Step 2: Convert to fraction form
    2,887.79/3,985.46 = 1,769.48/x
  3. Step 3: Cross multiply
    2,887.79x = 3,985.46 × 1,769.48
  4. Step 4: Simplify right side
    2,887.79x = 7,052,162.99
  5. Step 5: Solve for x
    x = 7,052,162.99/2,887.79
  6. Step 6: Final answer
    x = 2,442.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.