Home / 7,215.66-9,957.83-4,071.87

Finding the Fourth Proportional to 7,215.66, 9,957.83 and 4,071.87

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Solution

The fourth proportional to 7,215.66, 9,957.83 and 4,071.87 is: 5,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.66 : 9,957.83 = 4,071.87 : x
  2. Step 2: Convert to fraction form
    7,215.66/9,957.83 = 4,071.87/x
  3. Step 3: Cross multiply
    7,215.66x = 9,957.83 × 4,071.87
  4. Step 4: Simplify right side
    7,215.66x = 40,546,968.88
  5. Step 5: Solve for x
    x = 40,546,968.88/7,215.66
  6. Step 6: Final answer
    x = 5,619.30

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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.