Home / 2,052.57-2,830.30-1,388.28

Finding the Fourth Proportional to 2,052.57, 2,830.30 and 1,388.28

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Solution

The fourth proportional to 2,052.57, 2,830.30 and 1,388.28 is: 1,914.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,052.57 : 2,830.30 = 1,388.28 : x
  2. Step 2: Convert to fraction form
    2,052.57/2,830.30 = 1,388.28/x
  3. Step 3: Cross multiply
    2,052.57x = 2,830.30 × 1,388.28
  4. Step 4: Simplify right side
    2,052.57x = 3,929,245.41
  5. Step 5: Solve for x
    x = 3,929,245.41/2,052.57
  6. Step 6: Final answer
    x = 1,914.31

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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.