Home / 2,990.50-4,126.89-1,748.74

Finding the Fourth Proportional to 2,990.50, 4,126.89 and 1,748.74

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Solution

The fourth proportional to 2,990.50, 4,126.89 and 1,748.74 is: 2,413.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.50 : 4,126.89 = 1,748.74 : x
  2. Step 2: Convert to fraction form
    2,990.50/4,126.89 = 1,748.74/x
  3. Step 3: Cross multiply
    2,990.50x = 4,126.89 × 1,748.74
  4. Step 4: Simplify right side
    2,990.50x = 7,216,857.62
  5. Step 5: Solve for x
    x = 7,216,857.62/2,990.50
  6. Step 6: Final answer
    x = 2,413.26

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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.