Home / 2,830.72-3,905.64-1,712.28

Finding the Fourth Proportional to 2,830.72, 3,905.64 and 1,712.28

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Solution

The fourth proportional to 2,830.72, 3,905.64 and 1,712.28 is: 2,362.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.72 : 3,905.64 = 1,712.28 : x
  2. Step 2: Convert to fraction form
    2,830.72/3,905.64 = 1,712.28/x
  3. Step 3: Cross multiply
    2,830.72x = 3,905.64 × 1,712.28
  4. Step 4: Simplify right side
    2,830.72x = 6,687,549.26
  5. Step 5: Solve for x
    x = 6,687,549.26/2,830.72
  6. Step 6: Final answer
    x = 2,362.49

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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.