Home / 1,396.58-1,927.55-924.49

Finding the Fourth Proportional to 1,396.58, 1,927.55 and 924.49

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Solution

The fourth proportional to 1,396.58, 1,927.55 and 924.49 is: 1,275.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.58 : 1,927.55 = 924.49 : x
  2. Step 2: Convert to fraction form
    1,396.58/1,927.55 = 924.49/x
  3. Step 3: Cross multiply
    1,396.58x = 1,927.55 × 924.49
  4. Step 4: Simplify right side
    1,396.58x = 1,781,991.06
  5. Step 5: Solve for x
    x = 1,781,991.06/1,396.58
  6. Step 6: Final answer
    x = 1,275.97

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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.