Home / 1,178.64-1,622.82-1,001.23

Finding the Fourth Proportional to 1,178.64, 1,622.82 and 1,001.23

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Solution

The fourth proportional to 1,178.64, 1,622.82 and 1,001.23 is: 1,378.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.64 : 1,622.82 = 1,001.23 : x
  2. Step 2: Convert to fraction form
    1,178.64/1,622.82 = 1,001.23/x
  3. Step 3: Cross multiply
    1,178.64x = 1,622.82 × 1,001.23
  4. Step 4: Simplify right side
    1,178.64x = 1,624,812.01
  5. Step 5: Solve for x
    x = 1,624,812.01/1,178.64
  6. Step 6: Final answer
    x = 1,378.55

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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.