Home / 2,990.15-4,126.44-1,871.75

Finding the Fourth Proportional to 2,990.15, 4,126.44 and 1,871.75

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Solution

The fourth proportional to 2,990.15, 4,126.44 and 1,871.75 is: 2,583.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.15 : 4,126.44 = 1,871.75 : x
  2. Step 2: Convert to fraction form
    2,990.15/4,126.44 = 1,871.75/x
  3. Step 3: Cross multiply
    2,990.15x = 4,126.44 × 1,871.75
  4. Step 4: Simplify right side
    2,990.15x = 7,723,664.07
  5. Step 5: Solve for x
    x = 7,723,664.07/2,990.15
  6. Step 6: Final answer
    x = 2,583.04

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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.