Home / 5,156.38-7,735.55-1,778.28

Finding the Fourth Proportional to 5,156.38, 7,735.55 and 1,778.28

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Solution

The fourth proportional to 5,156.38, 7,735.55 and 1,778.28 is: 2,667.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.38 : 7,735.55 = 1,778.28 : x
  2. Step 2: Convert to fraction form
    5,156.38/7,735.55 = 1,778.28/x
  3. Step 3: Cross multiply
    5,156.38x = 7,735.55 × 1,778.28
  4. Step 4: Simplify right side
    5,156.38x = 13,755,967.71
  5. Step 5: Solve for x
    x = 13,755,967.71/5,156.38
  6. Step 6: Final answer
    x = 2,667.75

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1.5x scale

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.