Home / 1,962.17-2,707.85-1,078.05

Finding the Fourth Proportional to 1,962.17, 2,707.85 and 1,078.05

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Solution

The fourth proportional to 1,962.17, 2,707.85 and 1,078.05 is: 1,487.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.17 : 2,707.85 = 1,078.05 : x
  2. Step 2: Convert to fraction form
    1,962.17/2,707.85 = 1,078.05/x
  3. Step 3: Cross multiply
    1,962.17x = 2,707.85 × 1,078.05
  4. Step 4: Simplify right side
    1,962.17x = 2,919,200.39
  5. Step 5: Solve for x
    x = 2,919,200.39/1,962.17
  6. Step 6: Final answer
    x = 1,487.74

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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.