Home / 2,860.31-4,290.49-1,128.94

Finding the Fourth Proportional to 2,860.31, 4,290.49 and 1,128.94

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Solution

The fourth proportional to 2,860.31, 4,290.49 and 1,128.94 is: 1,693.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.31 : 4,290.49 = 1,128.94 : x
  2. Step 2: Convert to fraction form
    2,860.31/4,290.49 = 1,128.94/x
  3. Step 3: Cross multiply
    2,860.31x = 4,290.49 × 1,128.94
  4. Step 4: Simplify right side
    2,860.31x = 4,843,699.64
  5. Step 5: Solve for x
    x = 4,843,699.64/2,860.31
  6. Step 6: Final answer
    x = 1,693.42

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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.