Home / 1,653.96-2,276.44-1,321.32

Finding the Fourth Proportional to 1,653.96, 2,276.44 and 1,321.32

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Solution

The fourth proportional to 1,653.96, 2,276.44 and 1,321.32 is: 1,818.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.96 : 2,276.44 = 1,321.32 : x
  2. Step 2: Convert to fraction form
    1,653.96/2,276.44 = 1,321.32/x
  3. Step 3: Cross multiply
    1,653.96x = 2,276.44 × 1,321.32
  4. Step 4: Simplify right side
    1,653.96x = 3,007,905.70
  5. Step 5: Solve for x
    x = 3,007,905.70/1,653.96
  6. Step 6: Final answer
    x = 1,818.61

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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.