Home / 4,755.24-7,130.97-1,980.45

Finding the Fourth Proportional to 4,755.24, 7,130.97 and 1,980.45

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Solution

The fourth proportional to 4,755.24, 7,130.97 and 1,980.45 is: 2,969.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,755.24 : 7,130.97 = 1,980.45 : x
  2. Step 2: Convert to fraction form
    4,755.24/7,130.97 = 1,980.45/x
  3. Step 3: Cross multiply
    4,755.24x = 7,130.97 × 1,980.45
  4. Step 4: Simplify right side
    4,755.24x = 14,122,529.54
  5. Step 5: Solve for x
    x = 14,122,529.54/4,755.24
  6. Step 6: Final answer
    x = 2,969.89

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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.