Home / 3,125.36-4,321.08-2,987.60

Finding the Fourth Proportional to 3,125.36, 4,321.08 and 2,987.60

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Solution

The fourth proportional to 3,125.36, 4,321.08 and 2,987.60 is: 4,130.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.36 : 4,321.08 = 2,987.60 : x
  2. Step 2: Convert to fraction form
    3,125.36/4,321.08 = 2,987.60/x
  3. Step 3: Cross multiply
    3,125.36x = 4,321.08 × 2,987.60
  4. Step 4: Simplify right side
    3,125.36x = 12,909,658.61
  5. Step 5: Solve for x
    x = 12,909,658.61/3,125.36
  6. Step 6: Final answer
    x = 4,130.61

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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.