Home / 7,215.21-9,957.44-4,028.51

Finding the Fourth Proportional to 7,215.21, 9,957.44 and 4,028.51

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Solution

The fourth proportional to 7,215.21, 9,957.44 and 4,028.51 is: 5,559.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.21 : 9,957.44 = 4,028.51 : x
  2. Step 2: Convert to fraction form
    7,215.21/9,957.44 = 4,028.51/x
  3. Step 3: Cross multiply
    7,215.21x = 9,957.44 × 4,028.51
  4. Step 4: Simplify right side
    7,215.21x = 40,113,583.24
  5. Step 5: Solve for x
    x = 40,113,583.24/7,215.21
  6. Step 6: Final answer
    x = 5,559.58

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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.