Home / 8,641.20-12,928.86-4,748.34

Finding the Fourth Proportional to 8,641.20, 12,928.86 and 4,748.34

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Solution

The fourth proportional to 8,641.20, 12,928.86 and 4,748.34 is: 7,104.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.20 : 12,928.86 = 4,748.34 : x
  2. Step 2: Convert to fraction form
    8,641.20/12,928.86 = 4,748.34/x
  3. Step 3: Cross multiply
    8,641.20x = 12,928.86 × 4,748.34
  4. Step 4: Simplify right side
    8,641.20x = 61,390,623.09
  5. Step 5: Solve for x
    x = 61,390,623.09/8,641.20
  6. Step 6: Final answer
    x = 7,104.41

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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.