Home / 1,980.45-2,961.77-1,762.36

Finding the Fourth Proportional to 1,980.45, 2,961.77 and 1,762.36

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Solution

The fourth proportional to 1,980.45, 2,961.77 and 1,762.36 is: 2,635.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.45 : 2,961.77 = 1,762.36 : x
  2. Step 2: Convert to fraction form
    1,980.45/2,961.77 = 1,762.36/x
  3. Step 3: Cross multiply
    1,980.45x = 2,961.77 × 1,762.36
  4. Step 4: Simplify right side
    1,980.45x = 5,219,688.76
  5. Step 5: Solve for x
    x = 5,219,688.76/1,980.45
  6. Step 6: Final answer
    x = 2,635.61

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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.