Home / 1,627.40-2,243.22-1,605.80

Finding the Fourth Proportional to 1,627.40, 2,243.22 and 1,605.80

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Solution

The fourth proportional to 1,627.40, 2,243.22 and 1,605.80 is: 2,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.40 : 2,243.22 = 1,605.80 : x
  2. Step 2: Convert to fraction form
    1,627.40/2,243.22 = 1,605.80/x
  3. Step 3: Cross multiply
    1,627.40x = 2,243.22 × 1,605.80
  4. Step 4: Simplify right side
    1,627.40x = 3,602,162.68
  5. Step 5: Solve for x
    x = 3,602,162.68/1,627.40
  6. Step 6: Final answer
    x = 2,213.45

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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.