Home / 2,857.36-4,283.40-1,125.60

Finding the Fourth Proportional to 2,857.36, 4,283.40 and 1,125.60

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Solution

The fourth proportional to 2,857.36, 4,283.40 and 1,125.60 is: 1,687.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.36 : 4,283.40 = 1,125.60 : x
  2. Step 2: Convert to fraction form
    2,857.36/4,283.40 = 1,125.60/x
  3. Step 3: Cross multiply
    2,857.36x = 4,283.40 × 1,125.60
  4. Step 4: Simplify right side
    2,857.36x = 4,821,395.04
  5. Step 5: Solve for x
    x = 4,821,395.04/2,857.36
  6. Step 6: Final answer
    x = 1,687.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.