Home / 2,219.61-3,330.63-1,871.31

Finding the Fourth Proportional to 2,219.61, 3,330.63 and 1,871.31

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Solution

The fourth proportional to 2,219.61, 3,330.63 and 1,871.31 is: 2,807.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.61 : 3,330.63 = 1,871.31 : x
  2. Step 2: Convert to fraction form
    2,219.61/3,330.63 = 1,871.31/x
  3. Step 3: Cross multiply
    2,219.61x = 3,330.63 × 1,871.31
  4. Step 4: Simplify right side
    2,219.61x = 6,232,641.23
  5. Step 5: Solve for x
    x = 6,232,641.23/2,219.61
  6. Step 6: Final answer
    x = 2,807.99

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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.