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Finding the Fourth Proportional to 7,271.78, 10,907.19 and 4,347.81

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Solution

The fourth proportional to 7,271.78, 10,907.19 and 4,347.81 is: 6,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,271.78 : 10,907.19 = 4,347.81 : x
  2. Step 2: Convert to fraction form
    7,271.78/10,907.19 = 4,347.81/x
  3. Step 3: Cross multiply
    7,271.78x = 10,907.19 × 4,347.81
  4. Step 4: Simplify right side
    7,271.78x = 47,422,389.75
  5. Step 5: Solve for x
    x = 47,422,389.75/7,271.78
  6. Step 6: Final answer
    x = 6,521.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.