Home / 1,850.07-2,553.06-1,221.51

Finding the Fourth Proportional to 1,850.07, 2,553.06 and 1,221.51

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Solution

The fourth proportional to 1,850.07, 2,553.06 and 1,221.51 is: 1,685.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,850.07 : 2,553.06 = 1,221.51 : x
  2. Step 2: Convert to fraction form
    1,850.07/2,553.06 = 1,221.51/x
  3. Step 3: Cross multiply
    1,850.07x = 2,553.06 × 1,221.51
  4. Step 4: Simplify right side
    1,850.07x = 3,118,588.32
  5. Step 5: Solve for x
    x = 3,118,588.32/1,850.07
  6. Step 6: Final answer
    x = 1,685.66

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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.