Home / 2,947.39-4,421.09-1,386.42

Finding the Fourth Proportional to 2,947.39, 4,421.09 and 1,386.42

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Solution

The fourth proportional to 2,947.39, 4,421.09 and 1,386.42 is: 2,079.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.39 : 4,421.09 = 1,386.42 : x
  2. Step 2: Convert to fraction form
    2,947.39/4,421.09 = 1,386.42/x
  3. Step 3: Cross multiply
    2,947.39x = 4,421.09 × 1,386.42
  4. Step 4: Simplify right side
    2,947.39x = 6,129,487.60
  5. Step 5: Solve for x
    x = 6,129,487.60/2,947.39
  6. Step 6: Final answer
    x = 2,079.63

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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.