Home / 1,911.06-2,636.93-1,071.63

Finding the Fourth Proportional to 1,911.06, 2,636.93 and 1,071.63

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Solution

The fourth proportional to 1,911.06, 2,636.93 and 1,071.63 is: 1,478.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.06 : 2,636.93 = 1,071.63 : x
  2. Step 2: Convert to fraction form
    1,911.06/2,636.93 = 1,071.63/x
  3. Step 3: Cross multiply
    1,911.06x = 2,636.93 × 1,071.63
  4. Step 4: Simplify right side
    1,911.06x = 2,825,815.97
  5. Step 5: Solve for x
    x = 2,825,815.97/1,911.06
  6. Step 6: Final answer
    x = 1,478.66

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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.