Home / 1,729.26-2,386.35-1,140.21

Finding the Fourth Proportional to 1,729.26, 2,386.35 and 1,140.21

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Solution

The fourth proportional to 1,729.26, 2,386.35 and 1,140.21 is: 1,573.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.26 : 2,386.35 = 1,140.21 : x
  2. Step 2: Convert to fraction form
    1,729.26/2,386.35 = 1,140.21/x
  3. Step 3: Cross multiply
    1,729.26x = 2,386.35 × 1,140.21
  4. Step 4: Simplify right side
    1,729.26x = 2,720,940.13
  5. Step 5: Solve for x
    x = 2,720,940.13/1,729.26
  6. Step 6: Final answer
    x = 1,573.47

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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.