Home / 1,178.39-1,622.48-1,000.98

Finding the Fourth Proportional to 1,178.39, 1,622.48 and 1,000.98

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Solution

The fourth proportional to 1,178.39, 1,622.48 and 1,000.98 is: 1,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.39 : 1,622.48 = 1,000.98 : x
  2. Step 2: Convert to fraction form
    1,178.39/1,622.48 = 1,000.98/x
  3. Step 3: Cross multiply
    1,178.39x = 1,622.48 × 1,000.98
  4. Step 4: Simplify right side
    1,178.39x = 1,624,065.03
  5. Step 5: Solve for x
    x = 1,624,065.03/1,178.39
  6. Step 6: Final answer
    x = 1,378.21

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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.