Home / 1,369.09-1,885.44-975.43

Finding the Fourth Proportional to 1,369.09, 1,885.44 and 975.43

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Solution

The fourth proportional to 1,369.09, 1,885.44 and 975.43 is: 1,343.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.09 : 1,885.44 = 975.43 : x
  2. Step 2: Convert to fraction form
    1,369.09/1,885.44 = 975.43/x
  3. Step 3: Cross multiply
    1,369.09x = 1,885.44 × 975.43
  4. Step 4: Simplify right side
    1,369.09x = 1,839,114.74
  5. Step 5: Solve for x
    x = 1,839,114.74/1,369.09
  6. Step 6: Final answer
    x = 1,343.31

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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.