Home / 3,868.74-5,803.65-1,921.02

Finding the Fourth Proportional to 3,868.74, 5,803.65 and 1,921.02

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Solution

The fourth proportional to 3,868.74, 5,803.65 and 1,921.02 is: 2,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.74 : 5,803.65 = 1,921.02 : x
  2. Step 2: Convert to fraction form
    3,868.74/5,803.65 = 1,921.02/x
  3. Step 3: Cross multiply
    3,868.74x = 5,803.65 × 1,921.02
  4. Step 4: Simplify right side
    3,868.74x = 11,148,927.72
  5. Step 5: Solve for x
    x = 11,148,927.72/3,868.74
  6. Step 6: Final answer
    x = 2,881.80

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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.