Home / 2,091.68-2,886.42-1,147.45

Finding the Fourth Proportional to 2,091.68, 2,886.42 and 1,147.45

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Solution

The fourth proportional to 2,091.68, 2,886.42 and 1,147.45 is: 1,583.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.68 : 2,886.42 = 1,147.45 : x
  2. Step 2: Convert to fraction form
    2,091.68/2,886.42 = 1,147.45/x
  3. Step 3: Cross multiply
    2,091.68x = 2,886.42 × 1,147.45
  4. Step 4: Simplify right side
    2,091.68x = 3,312,011.65
  5. Step 5: Solve for x
    x = 3,312,011.65/2,091.68
  6. Step 6: Final answer
    x = 1,583.42

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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.