Home / 2,926.14-4,389.45-978.36

Finding the Fourth Proportional to 2,926.14, 4,389.45 and 978.36

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Solution

The fourth proportional to 2,926.14, 4,389.45 and 978.36 is: 1,467.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,926.14 : 4,389.45 = 978.36 : x
  2. Step 2: Convert to fraction form
    2,926.14/4,389.45 = 978.36/x
  3. Step 3: Cross multiply
    2,926.14x = 4,389.45 × 978.36
  4. Step 4: Simplify right side
    2,926.14x = 4,294,462.30
  5. Step 5: Solve for x
    x = 4,294,462.30/2,926.14
  6. Step 6: Final answer
    x = 1,467.62

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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.