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Finding the Fourth Proportional to 1,373.76, 1,888.79 and 1,222.97

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Solution

The fourth proportional to 1,373.76, 1,888.79 and 1,222.97 is: 1,681.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.76 : 1,888.79 = 1,222.97 : x
  2. Step 2: Convert to fraction form
    1,373.76/1,888.79 = 1,222.97/x
  3. Step 3: Cross multiply
    1,373.76x = 1,888.79 × 1,222.97
  4. Step 4: Simplify right side
    1,373.76x = 2,309,917.95
  5. Step 5: Solve for x
    x = 2,309,917.95/1,373.76
  6. Step 6: Final answer
    x = 1,681.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.