Home / 1,399.44-1,916.10-1,394.58

Finding the Fourth Proportional to 1,399.44, 1,916.10 and 1,394.58

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Solution

The fourth proportional to 1,399.44, 1,916.10 and 1,394.58 is: 1,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399.44 : 1,916.10 = 1,394.58 : x
  2. Step 2: Convert to fraction form
    1,399.44/1,916.10 = 1,394.58/x
  3. Step 3: Cross multiply
    1,399.44x = 1,916.10 × 1,394.58
  4. Step 4: Simplify right side
    1,399.44x = 2,672,154.74
  5. Step 5: Solve for x
    x = 2,672,154.74/1,399.44
  6. Step 6: Final answer
    x = 1,909.45

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.