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Finding the Fourth Proportional to 1,867.22, 2,798.10 and 826.28

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Solution

The fourth proportional to 1,867.22, 2,798.10 and 826.28 is: 1,238.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.22 : 2,798.10 = 826.28 : x
  2. Step 2: Convert to fraction form
    1,867.22/2,798.10 = 826.28/x
  3. Step 3: Cross multiply
    1,867.22x = 2,798.10 × 826.28
  4. Step 4: Simplify right side
    1,867.22x = 2,312,021.06
  5. Step 5: Solve for x
    x = 2,312,021.06/1,867.22
  6. Step 6: Final answer
    x = 1,238.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.