Home / 2,196.31-3,030-1,439.89

Finding the Fourth Proportional to 2,196.31, 3,030 and 1,439.89

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Solution

The fourth proportional to 2,196.31, 3,030 and 1,439.89 is: 1,986.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,196.31 : 3,030 = 1,439.89 : x
  2. Step 2: Convert to fraction form
    2,196.31/3,030 = 1,439.89/x
  3. Step 3: Cross multiply
    2,196.31x = 3,030 × 1,439.89
  4. Step 4: Simplify right side
    2,196.31x = 4,362,866.70
  5. Step 5: Solve for x
    x = 4,362,866.70/2,196.31
  6. Step 6: Final answer
    x = 1,986.45

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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.