Home / 2,071.09-2,858.12-1,126.90

Finding the Fourth Proportional to 2,071.09, 2,858.12 and 1,126.90

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Solution

The fourth proportional to 2,071.09, 2,858.12 and 1,126.90 is: 1,555.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.09 : 2,858.12 = 1,126.90 : x
  2. Step 2: Convert to fraction form
    2,071.09/2,858.12 = 1,126.90/x
  3. Step 3: Cross multiply
    2,071.09x = 2,858.12 × 1,126.90
  4. Step 4: Simplify right side
    2,071.09x = 3,220,815.43
  5. Step 5: Solve for x
    x = 3,220,815.43/2,071.09
  6. Step 6: Final answer
    x = 1,555.13

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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.