Home / 7,140.35-10,722.79-4,383.21

Finding the Fourth Proportional to 7,140.35, 10,722.79 and 4,383.21

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Solution

The fourth proportional to 7,140.35, 10,722.79 and 4,383.21 is: 6,582.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.35 : 10,722.79 = 4,383.21 : x
  2. Step 2: Convert to fraction form
    7,140.35/10,722.79 = 4,383.21/x
  3. Step 3: Cross multiply
    7,140.35x = 10,722.79 × 4,383.21
  4. Step 4: Simplify right side
    7,140.35x = 47,000,240.36
  5. Step 5: Solve for x
    x = 47,000,240.36/7,140.35
  6. Step 6: Final answer
    x = 6,582.34

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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.