Home / 3,124.36-4,319.70-2,986.60

Finding the Fourth Proportional to 3,124.36, 4,319.70 and 2,986.60

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Solution

The fourth proportional to 3,124.36, 4,319.70 and 2,986.60 is: 4,129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.36 : 4,319.70 = 2,986.60 : x
  2. Step 2: Convert to fraction form
    3,124.36/4,319.70 = 2,986.60/x
  3. Step 3: Cross multiply
    3,124.36x = 4,319.70 × 2,986.60
  4. Step 4: Simplify right side
    3,124.36x = 12,901,216.02
  5. Step 5: Solve for x
    x = 12,901,216.02/3,124.36
  6. Step 6: Final answer
    x = 4,129.23

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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.