Home / 1,947.58-2,688.68-1,565.33

Finding the Fourth Proportional to 1,947.58, 2,688.68 and 1,565.33

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Solution

The fourth proportional to 1,947.58, 2,688.68 and 1,565.33 is: 2,160.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.58 : 2,688.68 = 1,565.33 : x
  2. Step 2: Convert to fraction form
    1,947.58/2,688.68 = 1,565.33/x
  3. Step 3: Cross multiply
    1,947.58x = 2,688.68 × 1,565.33
  4. Step 4: Simplify right side
    1,947.58x = 4,208,661.93
  5. Step 5: Solve for x
    x = 4,208,661.93/1,947.58
  6. Step 6: Final answer
    x = 2,160.97

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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.