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Finding the Fourth Proportional to 1,319.22, 1,822.93 and 1,255.16

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Solution

The fourth proportional to 1,319.22, 1,822.93 and 1,255.16 is: 1,734.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.22 : 1,822.93 = 1,255.16 : x
  2. Step 2: Convert to fraction form
    1,319.22/1,822.93 = 1,255.16/x
  3. Step 3: Cross multiply
    1,319.22x = 1,822.93 × 1,255.16
  4. Step 4: Simplify right side
    1,319.22x = 2,288,070.24
  5. Step 5: Solve for x
    x = 2,288,070.24/1,319.22
  6. Step 6: Final answer
    x = 1,734.41

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1.5x scale

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.