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Finding the Fourth Proportional to 1,886.74, 2,828.37 and 716.39

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Solution

The fourth proportional to 1,886.74, 2,828.37 and 716.39 is: 1,073.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.74 : 2,828.37 = 716.39 : x
  2. Step 2: Convert to fraction form
    1,886.74/2,828.37 = 716.39/x
  3. Step 3: Cross multiply
    1,886.74x = 2,828.37 × 716.39
  4. Step 4: Simplify right side
    1,886.74x = 2,026,227.02
  5. Step 5: Solve for x
    x = 2,026,227.02/1,886.74
  6. Step 6: Final answer
    x = 1,073.93

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1.5x scale

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.