Home / 1,970.26-2,719.21-1,131.23

Finding the Fourth Proportional to 1,970.26, 2,719.21 and 1,131.23

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Solution

The fourth proportional to 1,970.26, 2,719.21 and 1,131.23 is: 1,561.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.26 : 2,719.21 = 1,131.23 : x
  2. Step 2: Convert to fraction form
    1,970.26/2,719.21 = 1,131.23/x
  3. Step 3: Cross multiply
    1,970.26x = 2,719.21 × 1,131.23
  4. Step 4: Simplify right side
    1,970.26x = 3,076,036.08
  5. Step 5: Solve for x
    x = 3,076,036.08/1,970.26
  6. Step 6: Final answer
    x = 1,561.23

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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.