Home / 2,091.29-2,886.07-1,207.09

Finding the Fourth Proportional to 2,091.29, 2,886.07 and 1,207.09

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Solution

The fourth proportional to 2,091.29, 2,886.07 and 1,207.09 is: 1,665.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.29 : 2,886.07 = 1,207.09 : x
  2. Step 2: Convert to fraction form
    2,091.29/2,886.07 = 1,207.09/x
  3. Step 3: Cross multiply
    2,091.29x = 2,886.07 × 1,207.09
  4. Step 4: Simplify right side
    2,091.29x = 3,483,746.24
  5. Step 5: Solve for x
    x = 3,483,746.24/2,091.29
  6. Step 6: Final answer
    x = 1,665.84

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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.