Home / 2,664.02-3,991.86-1,688.07

Finding the Fourth Proportional to 2,664.02, 3,991.86 and 1,688.07

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Solution

The fourth proportional to 2,664.02, 3,991.86 and 1,688.07 is: 2,529.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,664.02 : 3,991.86 = 1,688.07 : x
  2. Step 2: Convert to fraction form
    2,664.02/3,991.86 = 1,688.07/x
  3. Step 3: Cross multiply
    2,664.02x = 3,991.86 × 1,688.07
  4. Step 4: Simplify right side
    2,664.02x = 6,738,539.11
  5. Step 5: Solve for x
    x = 6,738,539.11/2,664.02
  6. Step 6: Final answer
    x = 2,529.46

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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.