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Finding the Fourth Proportional to 6,915, 10,373.46 and 3,215.34

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Solution

The fourth proportional to 6,915, 10,373.46 and 3,215.34 is: 4,823.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,915 : 10,373.46 = 3,215.34 : x
  2. Step 2: Convert to fraction form
    6,915/10,373.46 = 3,215.34/x
  3. Step 3: Cross multiply
    6,915x = 10,373.46 × 3,215.34
  4. Step 4: Simplify right side
    6,915x = 33,354,200.88
  5. Step 5: Solve for x
    x = 33,354,200.88/6,915
  6. Step 6: Final answer
    x = 4,823.46

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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.