Home / 7,215.50-9,957.39-4,071.62

Finding the Fourth Proportional to 7,215.50, 9,957.39 and 4,071.62

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Solution

The fourth proportional to 7,215.50, 9,957.39 and 4,071.62 is: 5,618.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.50 : 9,957.39 = 4,071.62 : x
  2. Step 2: Convert to fraction form
    7,215.50/9,957.39 = 4,071.62/x
  3. Step 3: Cross multiply
    7,215.50x = 9,957.39 × 4,071.62
  4. Step 4: Simplify right side
    7,215.50x = 40,542,708.27
  5. Step 5: Solve for x
    x = 40,542,708.27/7,215.50
  6. Step 6: Final answer
    x = 5,618.84

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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.