Home / 9,987.18-14,980.76-3,413.42

Finding the Fourth Proportional to 9,987.18, 14,980.76 and 3,413.42

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Solution

The fourth proportional to 9,987.18, 14,980.76 and 3,413.42 is: 5,120.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.18 : 14,980.76 = 3,413.42 : x
  2. Step 2: Convert to fraction form
    9,987.18/14,980.76 = 3,413.42/x
  3. Step 3: Cross multiply
    9,987.18x = 14,980.76 × 3,413.42
  4. Step 4: Simplify right side
    9,987.18x = 51,135,625.80
  5. Step 5: Solve for x
    x = 51,135,625.80/9,987.18
  6. Step 6: Final answer
    x = 5,120.13

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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.