Home / 4,765.54-7,142.85-1,991.71

Finding the Fourth Proportional to 4,765.54, 7,142.85 and 1,991.71

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Solution

The fourth proportional to 4,765.54, 7,142.85 and 1,991.71 is: 2,985.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,765.54 : 7,142.85 = 1,991.71 : x
  2. Step 2: Convert to fraction form
    4,765.54/7,142.85 = 1,991.71/x
  3. Step 3: Cross multiply
    4,765.54x = 7,142.85 × 1,991.71
  4. Step 4: Simplify right side
    4,765.54x = 14,226,485.77
  5. Step 5: Solve for x
    x = 14,226,485.77/4,765.54
  6. Step 6: Final answer
    x = 2,985.28

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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.