Home / 1,911.38-2,637.57-1,072.07

Finding the Fourth Proportional to 1,911.38, 2,637.57 and 1,072.07

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Solution

The fourth proportional to 1,911.38, 2,637.57 and 1,072.07 is: 1,479.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.38 : 2,637.57 = 1,072.07 : x
  2. Step 2: Convert to fraction form
    1,911.38/2,637.57 = 1,072.07/x
  3. Step 3: Cross multiply
    1,911.38x = 2,637.57 × 1,072.07
  4. Step 4: Simplify right side
    1,911.38x = 2,827,659.67
  5. Step 5: Solve for x
    x = 2,827,659.67/1,911.38
  6. Step 6: Final answer
    x = 1,479.39

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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.