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Finding the Fourth Proportional to 7,173.88, 9,900.90 and 4,030.24

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Solution

The fourth proportional to 7,173.88, 9,900.90 and 4,030.24 is: 5,562.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.88 : 9,900.90 = 4,030.24 : x
  2. Step 2: Convert to fraction form
    7,173.88/9,900.90 = 4,030.24/x
  3. Step 3: Cross multiply
    7,173.88x = 9,900.90 × 4,030.24
  4. Step 4: Simplify right side
    7,173.88x = 39,903,003.22
  5. Step 5: Solve for x
    x = 39,903,003.22/7,173.88
  6. Step 6: Final answer
    x = 5,562.26

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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.