Home / 3,128.64-4,682.48-3,087.20

Finding the Fourth Proportional to 3,128.64, 4,682.48 and 3,087.20

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Solution

The fourth proportional to 3,128.64, 4,682.48 and 3,087.20 is: 4,620.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.64 : 4,682.48 = 3,087.20 : x
  2. Step 2: Convert to fraction form
    3,128.64/4,682.48 = 3,087.20/x
  3. Step 3: Cross multiply
    3,128.64x = 4,682.48 × 3,087.20
  4. Step 4: Simplify right side
    3,128.64x = 14,455,752.26
  5. Step 5: Solve for x
    x = 14,455,752.26/3,128.64
  6. Step 6: Final answer
    x = 4,620.46

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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.