Home / 7,215.41-9,957.19-4,071.53

Finding the Fourth Proportional to 7,215.41, 9,957.19 and 4,071.53

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Solution

The fourth proportional to 7,215.41, 9,957.19 and 4,071.53 is: 5,618.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.41 : 9,957.19 = 4,071.53 : x
  2. Step 2: Convert to fraction form
    7,215.41/9,957.19 = 4,071.53/x
  3. Step 3: Cross multiply
    7,215.41x = 9,957.19 × 4,071.53
  4. Step 4: Simplify right side
    7,215.41x = 40,540,987.62
  5. Step 5: Solve for x
    x = 40,540,987.62/7,215.41
  6. Step 6: Final answer
    x = 5,618.67

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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.