Home / 2,919.74-4,030.14-1,871.78

Finding the Fourth Proportional to 2,919.74, 4,030.14 and 1,871.78

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Solution

The fourth proportional to 2,919.74, 4,030.14 and 1,871.78 is: 2,583.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.74 : 4,030.14 = 1,871.78 : x
  2. Step 2: Convert to fraction form
    2,919.74/4,030.14 = 1,871.78/x
  3. Step 3: Cross multiply
    2,919.74x = 4,030.14 × 1,871.78
  4. Step 4: Simplify right side
    2,919.74x = 7,543,535.45
  5. Step 5: Solve for x
    x = 7,543,535.45/2,919.74
  6. Step 6: Final answer
    x = 2,583.63

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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.