Home / 2,091.45-2,886.36-1,207.26

Finding the Fourth Proportional to 2,091.45, 2,886.36 and 1,207.26

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Solution

The fourth proportional to 2,091.45, 2,886.36 and 1,207.26 is: 1,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.45 : 2,886.36 = 1,207.26 : x
  2. Step 2: Convert to fraction form
    2,091.45/2,886.36 = 1,207.26/x
  3. Step 3: Cross multiply
    2,091.45x = 2,886.36 × 1,207.26
  4. Step 4: Simplify right side
    2,091.45x = 3,484,586.97
  5. Step 5: Solve for x
    x = 3,484,586.97/2,091.45
  6. Step 6: Final answer
    x = 1,666.11

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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.