Home / 7,043.49-9,720.68-3,900.69

Finding the Fourth Proportional to 7,043.49, 9,720.68 and 3,900.69

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Solution

The fourth proportional to 7,043.49, 9,720.68 and 3,900.69 is: 5,383.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,043.49 : 9,720.68 = 3,900.69 : x
  2. Step 2: Convert to fraction form
    7,043.49/9,720.68 = 3,900.69/x
  3. Step 3: Cross multiply
    7,043.49x = 9,720.68 × 3,900.69
  4. Step 4: Simplify right side
    7,043.49x = 37,917,339.77
  5. Step 5: Solve for x
    x = 37,917,339.77/7,043.49
  6. Step 6: Final answer
    x = 5,383.32

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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.