Home / 1,418.28-1,955.60-1,137.60

Finding the Fourth Proportional to 1,418.28, 1,955.60 and 1,137.60

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Solution

The fourth proportional to 1,418.28, 1,955.60 and 1,137.60 is: 1,568.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.28 : 1,955.60 = 1,137.60 : x
  2. Step 2: Convert to fraction form
    1,418.28/1,955.60 = 1,137.60/x
  3. Step 3: Cross multiply
    1,418.28x = 1,955.60 × 1,137.60
  4. Step 4: Simplify right side
    1,418.28x = 2,224,690.56
  5. Step 5: Solve for x
    x = 2,224,690.56/1,418.28
  6. Step 6: Final answer
    x = 1,568.58

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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.