Home / 1,471.27-2,030.30-808.09

Finding the Fourth Proportional to 1,471.27, 2,030.30 and 808.09

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Solution

The fourth proportional to 1,471.27, 2,030.30 and 808.09 is: 1,115.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.27 : 2,030.30 = 808.09 : x
  2. Step 2: Convert to fraction form
    1,471.27/2,030.30 = 808.09/x
  3. Step 3: Cross multiply
    1,471.27x = 2,030.30 × 808.09
  4. Step 4: Simplify right side
    1,471.27x = 1,640,661.09
  5. Step 5: Solve for x
    x = 1,640,661.09/1,471.27
  6. Step 6: Final answer
    x = 1,115.13

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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.