Home / 1,543.44-2,128.84-983.33

Finding the Fourth Proportional to 1,543.44, 2,128.84 and 983.33

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Solution

The fourth proportional to 1,543.44, 2,128.84 and 983.33 is: 1,356.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.44 : 2,128.84 = 983.33 : x
  2. Step 2: Convert to fraction form
    1,543.44/2,128.84 = 983.33/x
  3. Step 3: Cross multiply
    1,543.44x = 2,128.84 × 983.33
  4. Step 4: Simplify right side
    1,543.44x = 2,093,352.24
  5. Step 5: Solve for x
    x = 2,093,352.24/1,543.44
  6. Step 6: Final answer
    x = 1,356.29

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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.