Home / 6,905.68-9,529.56-4,221.40

Finding the Fourth Proportional to 6,905.68, 9,529.56 and 4,221.40

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Solution

The fourth proportional to 6,905.68, 9,529.56 and 4,221.40 is: 5,825.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,905.68 : 9,529.56 = 4,221.40 : x
  2. Step 2: Convert to fraction form
    6,905.68/9,529.56 = 4,221.40/x
  3. Step 3: Cross multiply
    6,905.68x = 9,529.56 × 4,221.40
  4. Step 4: Simplify right side
    6,905.68x = 40,228,063.70
  5. Step 5: Solve for x
    x = 40,228,063.70/6,905.68
  6. Step 6: Final answer
    x = 5,825.36

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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.