Home / 2,788.34-4,178.93-1,142.91

Finding the Fourth Proportional to 2,788.34, 4,178.93 and 1,142.91

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Solution

The fourth proportional to 2,788.34, 4,178.93 and 1,142.91 is: 1,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.34 : 4,178.93 = 1,142.91 : x
  2. Step 2: Convert to fraction form
    2,788.34/4,178.93 = 1,142.91/x
  3. Step 3: Cross multiply
    2,788.34x = 4,178.93 × 1,142.91
  4. Step 4: Simplify right side
    2,788.34x = 4,776,135.17
  5. Step 5: Solve for x
    x = 4,776,135.17/2,788.34
  6. Step 6: Final answer
    x = 1,712.90

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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.