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Finding the Fourth Proportional to 1,891.93, 2,610.13 and 1,395.75

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Solution

The fourth proportional to 1,891.93, 2,610.13 and 1,395.75 is: 1,925.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.93 : 2,610.13 = 1,395.75 : x
  2. Step 2: Convert to fraction form
    1,891.93/2,610.13 = 1,395.75/x
  3. Step 3: Cross multiply
    1,891.93x = 2,610.13 × 1,395.75
  4. Step 4: Simplify right side
    1,891.93x = 3,643,088.95
  5. Step 5: Solve for x
    x = 3,643,088.95/1,891.93
  6. Step 6: Final answer
    x = 1,925.59

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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.