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Finding the Fourth Proportional to 1,346.08, 1,857.72 and 822.64

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Solution

The fourth proportional to 1,346.08, 1,857.72 and 822.64 is: 1,135.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,346.08 : 1,857.72 = 822.64 : x
  2. Step 2: Convert to fraction form
    1,346.08/1,857.72 = 822.64/x
  3. Step 3: Cross multiply
    1,346.08x = 1,857.72 × 822.64
  4. Step 4: Simplify right side
    1,346.08x = 1,528,234.78
  5. Step 5: Solve for x
    x = 1,528,234.78/1,346.08
  6. Step 6: Final answer
    x = 1,135.32

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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.