Home / 1,571.44-2,168.40-933.28

Finding the Fourth Proportional to 1,571.44, 2,168.40 and 933.28

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Solution

The fourth proportional to 1,571.44, 2,168.40 and 933.28 is: 1,287.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.44 : 2,168.40 = 933.28 : x
  2. Step 2: Convert to fraction form
    1,571.44/2,168.40 = 933.28/x
  3. Step 3: Cross multiply
    1,571.44x = 2,168.40 × 933.28
  4. Step 4: Simplify right side
    1,571.44x = 2,023,724.35
  5. Step 5: Solve for x
    x = 2,023,724.35/1,571.44
  6. Step 6: Final answer
    x = 1,287.82

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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.