Home / 5,413.40-8,123.70-2,490.20

Finding the Fourth Proportional to 5,413.40, 8,123.70 and 2,490.20

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Solution

The fourth proportional to 5,413.40, 8,123.70 and 2,490.20 is: 3,736.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.40 : 8,123.70 = 2,490.20 : x
  2. Step 2: Convert to fraction form
    5,413.40/8,123.70 = 2,490.20/x
  3. Step 3: Cross multiply
    5,413.40x = 8,123.70 × 2,490.20
  4. Step 4: Simplify right side
    5,413.40x = 20,229,637.74
  5. Step 5: Solve for x
    x = 20,229,637.74/5,413.40
  6. Step 6: Final answer
    x = 3,736.96

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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.