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Finding the Fourth Proportional to 1,748.85, 2,413.70 and 1,189.00

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Solution

The fourth proportional to 1,748.85, 2,413.70 and 1,189.00 is: 1,641.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,748.85 : 2,413.70 = 1,189.00 : x
  2. Step 2: Convert to fraction form
    1,748.85/2,413.70 = 1,189.00/x
  3. Step 3: Cross multiply
    1,748.85x = 2,413.70 × 1,189.00
  4. Step 4: Simplify right side
    1,748.85x = 2,869,897.62
  5. Step 5: Solve for x
    x = 2,869,897.62/1,748.85
  6. Step 6: Final answer
    x = 1,641.02

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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.