Home / 1,947.96-2,688.12-1,161.60

Finding the Fourth Proportional to 1,947.96, 2,688.12 and 1,161.60

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Solution

The fourth proportional to 1,947.96, 2,688.12 and 1,161.60 is: 1,602.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.96 : 2,688.12 = 1,161.60 : x
  2. Step 2: Convert to fraction form
    1,947.96/2,688.12 = 1,161.60/x
  3. Step 3: Cross multiply
    1,947.96x = 2,688.12 × 1,161.60
  4. Step 4: Simplify right side
    1,947.96x = 3,122,520.19
  5. Step 5: Solve for x
    x = 3,122,520.19/1,947.96
  6. Step 6: Final answer
    x = 1,602.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.