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Finding the Fourth Proportional to 4,791.58, 7,187.16 and 1,980.10

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Solution

The fourth proportional to 4,791.58, 7,187.16 and 1,980.10 is: 2,970.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,791.58 : 7,187.16 = 1,980.10 : x
  2. Step 2: Convert to fraction form
    4,791.58/7,187.16 = 1,980.10/x
  3. Step 3: Cross multiply
    4,791.58x = 7,187.16 × 1,980.10
  4. Step 4: Simplify right side
    4,791.58x = 14,231,295.52
  5. Step 5: Solve for x
    x = 14,231,295.52/4,791.58
  6. Step 6: Final answer
    x = 2,970.06

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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.