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Finding the Fourth Proportional to 7,173.46, 9,897.62 and 4,187.58

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Solution

The fourth proportional to 7,173.46, 9,897.62 and 4,187.58 is: 5,777.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.46 : 9,897.62 = 4,187.58 : x
  2. Step 2: Convert to fraction form
    7,173.46/9,897.62 = 4,187.58/x
  3. Step 3: Cross multiply
    7,173.46x = 9,897.62 × 4,187.58
  4. Step 4: Simplify right side
    7,173.46x = 41,447,075.56
  5. Step 5: Solve for x
    x = 41,447,075.56/7,173.46
  6. Step 6: Final answer
    x = 5,777.84

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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.