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Finding the Fourth Proportional to 1,973.50, 2,961.09 and 740.73

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Solution

The fourth proportional to 1,973.50, 2,961.09 and 740.73 is: 1,111.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,973.50 : 2,961.09 = 740.73 : x
  2. Step 2: Convert to fraction form
    1,973.50/2,961.09 = 740.73/x
  3. Step 3: Cross multiply
    1,973.50x = 2,961.09 × 740.73
  4. Step 4: Simplify right side
    1,973.50x = 2,193,368.20
  5. Step 5: Solve for x
    x = 2,193,368.20/1,973.50
  6. Step 6: Final answer
    x = 1,111.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.