Home / 2,990.56-4,124.18-1,871.14

Finding the Fourth Proportional to 2,990.56, 4,124.18 and 1,871.14

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Solution

The fourth proportional to 2,990.56, 4,124.18 and 1,871.14 is: 2,580.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.56 : 4,124.18 = 1,871.14 : x
  2. Step 2: Convert to fraction form
    2,990.56/4,124.18 = 1,871.14/x
  3. Step 3: Cross multiply
    2,990.56x = 4,124.18 × 1,871.14
  4. Step 4: Simplify right side
    2,990.56x = 7,716,918.17
  5. Step 5: Solve for x
    x = 7,716,918.17/2,990.56
  6. Step 6: Final answer
    x = 2,580.43

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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.