Home / 1,612.75-2,226.55-1,239.01

Finding the Fourth Proportional to 1,612.75, 2,226.55 and 1,239.01

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Solution

The fourth proportional to 1,612.75, 2,226.55 and 1,239.01 is: 1,710.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.75 : 2,226.55 = 1,239.01 : x
  2. Step 2: Convert to fraction form
    1,612.75/2,226.55 = 1,239.01/x
  3. Step 3: Cross multiply
    1,612.75x = 2,226.55 × 1,239.01
  4. Step 4: Simplify right side
    1,612.75x = 2,758,717.72
  5. Step 5: Solve for x
    x = 2,758,717.72/1,612.75
  6. Step 6: Final answer
    x = 1,710.57

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Half scale
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Double scale
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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.