Home / 2,857.80-4,285.98-1,126.44

Finding the Fourth Proportional to 2,857.80, 4,285.98 and 1,126.44

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Solution

The fourth proportional to 2,857.80, 4,285.98 and 1,126.44 is: 1,689.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.80 : 4,285.98 = 1,126.44 : x
  2. Step 2: Convert to fraction form
    2,857.80/4,285.98 = 1,126.44/x
  3. Step 3: Cross multiply
    2,857.80x = 4,285.98 × 1,126.44
  4. Step 4: Simplify right side
    2,857.80x = 4,827,899.31
  5. Step 5: Solve for x
    x = 4,827,899.31/2,857.80
  6. Step 6: Final answer
    x = 1,689.38

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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.