Home / 7,021.14-9,690.81-4,038.69

Finding the Fourth Proportional to 7,021.14, 9,690.81 and 4,038.69

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Solution

The fourth proportional to 7,021.14, 9,690.81 and 4,038.69 is: 5,574.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.14 : 9,690.81 = 4,038.69 : x
  2. Step 2: Convert to fraction form
    7,021.14/9,690.81 = 4,038.69/x
  3. Step 3: Cross multiply
    7,021.14x = 9,690.81 × 4,038.69
  4. Step 4: Simplify right side
    7,021.14x = 39,138,177.44
  5. Step 5: Solve for x
    x = 39,138,177.44/7,021.14
  6. Step 6: Final answer
    x = 5,574.33

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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.