Home / 3,012.75-4,158.52-1,686.89

Finding the Fourth Proportional to 3,012.75, 4,158.52 and 1,686.89

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Solution

The fourth proportional to 3,012.75, 4,158.52 and 1,686.89 is: 2,328.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.75 : 4,158.52 = 1,686.89 : x
  2. Step 2: Convert to fraction form
    3,012.75/4,158.52 = 1,686.89/x
  3. Step 3: Cross multiply
    3,012.75x = 4,158.52 × 1,686.89
  4. Step 4: Simplify right side
    3,012.75x = 7,014,971.98
  5. Step 5: Solve for x
    x = 7,014,971.98/3,012.75
  6. Step 6: Final answer
    x = 2,328.43

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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.