Home / 1,911.07-2,634.76-1,379.51

Finding the Fourth Proportional to 1,911.07, 2,634.76 and 1,379.51

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Solution

The fourth proportional to 1,911.07, 2,634.76 and 1,379.51 is: 1,901.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.07 : 2,634.76 = 1,379.51 : x
  2. Step 2: Convert to fraction form
    1,911.07/2,634.76 = 1,379.51/x
  3. Step 3: Cross multiply
    1,911.07x = 2,634.76 × 1,379.51
  4. Step 4: Simplify right side
    1,911.07x = 3,634,677.77
  5. Step 5: Solve for x
    x = 3,634,677.77/1,911.07
  6. Step 6: Final answer
    x = 1,901.91

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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.