Home / 2,091.90-2,886.74-1,253.07

Finding the Fourth Proportional to 2,091.90, 2,886.74 and 1,253.07

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Solution

The fourth proportional to 2,091.90, 2,886.74 and 1,253.07 is: 1,729.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.90 : 2,886.74 = 1,253.07 : x
  2. Step 2: Convert to fraction form
    2,091.90/2,886.74 = 1,253.07/x
  3. Step 3: Cross multiply
    2,091.90x = 2,886.74 × 1,253.07
  4. Step 4: Simplify right side
    2,091.90x = 3,617,285.73
  5. Step 5: Solve for x
    x = 3,617,285.73/2,091.90
  6. Step 6: Final answer
    x = 1,729.18

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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.