Home / 1,913.90-2,871.72-1,135.44

Finding the Fourth Proportional to 1,913.90, 2,871.72 and 1,135.44

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Solution

The fourth proportional to 1,913.90, 2,871.72 and 1,135.44 is: 1,703.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.90 : 2,871.72 = 1,135.44 : x
  2. Step 2: Convert to fraction form
    1,913.90/2,871.72 = 1,135.44/x
  3. Step 3: Cross multiply
    1,913.90x = 2,871.72 × 1,135.44
  4. Step 4: Simplify right side
    1,913.90x = 3,260,665.76
  5. Step 5: Solve for x
    x = 3,260,665.76/1,913.90
  6. Step 6: Final answer
    x = 1,703.68

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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.