Home / 9,890.14-13,648.05-5,413.79

Finding the Fourth Proportional to 9,890.14, 13,648.05 and 5,413.79

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Solution

The fourth proportional to 9,890.14, 13,648.05 and 5,413.79 is: 7,470.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,890.14 : 13,648.05 = 5,413.79 : x
  2. Step 2: Convert to fraction form
    9,890.14/13,648.05 = 5,413.79/x
  3. Step 3: Cross multiply
    9,890.14x = 13,648.05 × 5,413.79
  4. Step 4: Simplify right side
    9,890.14x = 73,887,676.61
  5. Step 5: Solve for x
    x = 73,887,676.61/9,890.14
  6. Step 6: Final answer
    x = 7,470.84

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1.5x scale

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.