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Finding the Fourth Proportional to 1,749.22, 2,623.83 and 653.57

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Solution

The fourth proportional to 1,749.22, 2,623.83 and 653.57 is: 980.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,749.22 : 2,623.83 = 653.57 : x
  2. Step 2: Convert to fraction form
    1,749.22/2,623.83 = 653.57/x
  3. Step 3: Cross multiply
    1,749.22x = 2,623.83 × 653.57
  4. Step 4: Simplify right side
    1,749.22x = 1,714,856.57
  5. Step 5: Solve for x
    x = 1,714,856.57/1,749.22
  6. Step 6: Final answer
    x = 980.36

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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.