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Finding the Fourth Proportional to 7,200.51, 9,935.40 and 4,216.38

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Solution

The fourth proportional to 7,200.51, 9,935.40 and 4,216.38 is: 5,817.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.51 : 9,935.40 = 4,216.38 : x
  2. Step 2: Convert to fraction form
    7,200.51/9,935.40 = 4,216.38/x
  3. Step 3: Cross multiply
    7,200.51x = 9,935.40 × 4,216.38
  4. Step 4: Simplify right side
    7,200.51x = 41,891,421.85
  5. Step 5: Solve for x
    x = 41,891,421.85/7,200.51
  6. Step 6: Final answer
    x = 5,817.84

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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.