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Finding the Fourth Proportional to 7,890.21, 10,888.22 and 4,353.35

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Solution

The fourth proportional to 7,890.21, 10,888.22 and 4,353.35 is: 6,007.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.21 : 10,888.22 = 4,353.35 : x
  2. Step 2: Convert to fraction form
    7,890.21/10,888.22 = 4,353.35/x
  3. Step 3: Cross multiply
    7,890.21x = 10,888.22 × 4,353.35
  4. Step 4: Simplify right side
    7,890.21x = 47,400,188.98
  5. Step 5: Solve for x
    x = 47,400,188.98/7,890.21
  6. Step 6: Final answer
    x = 6,007.47

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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.