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Finding the Fourth Proportional to 1,957.63, 2,699.31 and 1,248.53

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Solution

The fourth proportional to 1,957.63, 2,699.31 and 1,248.53 is: 1,721.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957.63 : 2,699.31 = 1,248.53 : x
  2. Step 2: Convert to fraction form
    1,957.63/2,699.31 = 1,248.53/x
  3. Step 3: Cross multiply
    1,957.63x = 2,699.31 × 1,248.53
  4. Step 4: Simplify right side
    1,957.63x = 3,370,169.51
  5. Step 5: Solve for x
    x = 3,370,169.51/1,957.63
  6. Step 6: Final answer
    x = 1,721.56

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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.