Home / 2,913.21-4,017.65-1,905.48

Finding the Fourth Proportional to 2,913.21, 4,017.65 and 1,905.48

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Solution

The fourth proportional to 2,913.21, 4,017.65 and 1,905.48 is: 2,627.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.21 : 4,017.65 = 1,905.48 : x
  2. Step 2: Convert to fraction form
    2,913.21/4,017.65 = 1,905.48/x
  3. Step 3: Cross multiply
    2,913.21x = 4,017.65 × 1,905.48
  4. Step 4: Simplify right side
    2,913.21x = 7,655,553.49
  5. Step 5: Solve for x
    x = 7,655,553.49/2,913.21
  6. Step 6: Final answer
    x = 2,627.88

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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.