Home / 2,859.10-4,284.60-2,112.90

Finding the Fourth Proportional to 2,859.10, 4,284.60 and 2,112.90

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Solution

The fourth proportional to 2,859.10, 4,284.60 and 2,112.90 is: 3,166.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.10 : 4,284.60 = 2,112.90 : x
  2. Step 2: Convert to fraction form
    2,859.10/4,284.60 = 2,112.90/x
  3. Step 3: Cross multiply
    2,859.10x = 4,284.60 × 2,112.90
  4. Step 4: Simplify right side
    2,859.10x = 9,052,931.34
  5. Step 5: Solve for x
    x = 9,052,931.34/2,859.10
  6. Step 6: Final answer
    x = 3,166.36

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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.