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Finding the Fourth Proportional to 1,917.95, 2,645.12 and 1,497.65

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Solution

The fourth proportional to 1,917.95, 2,645.12 and 1,497.65 is: 2,065.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.95 : 2,645.12 = 1,497.65 : x
  2. Step 2: Convert to fraction form
    1,917.95/2,645.12 = 1,497.65/x
  3. Step 3: Cross multiply
    1,917.95x = 2,645.12 × 1,497.65
  4. Step 4: Simplify right side
    1,917.95x = 3,961,456.48
  5. Step 5: Solve for x
    x = 3,961,456.48/1,917.95
  6. Step 6: Final answer
    x = 2,065.46

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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.