Home / 1,947.54-2,690.34-1,781.58

Finding the Fourth Proportional to 1,947.54, 2,690.34 and 1,781.58

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Solution

The fourth proportional to 1,947.54, 2,690.34 and 1,781.58 is: 2,461.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.54 : 2,690.34 = 1,781.58 : x
  2. Step 2: Convert to fraction form
    1,947.54/2,690.34 = 1,781.58/x
  3. Step 3: Cross multiply
    1,947.54x = 2,690.34 × 1,781.58
  4. Step 4: Simplify right side
    1,947.54x = 4,793,055.94
  5. Step 5: Solve for x
    x = 4,793,055.94/1,947.54
  6. Step 6: Final answer
    x = 2,461.08

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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.