Home / 7,015.11-9,681.05-3,828.61

Finding the Fourth Proportional to 7,015.11, 9,681.05 and 3,828.61

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Solution

The fourth proportional to 7,015.11, 9,681.05 and 3,828.61 is: 5,283.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.11 : 9,681.05 = 3,828.61 : x
  2. Step 2: Convert to fraction form
    7,015.11/9,681.05 = 3,828.61/x
  3. Step 3: Cross multiply
    7,015.11x = 9,681.05 × 3,828.61
  4. Step 4: Simplify right side
    7,015.11x = 37,064,940.64
  5. Step 5: Solve for x
    x = 37,064,940.64/7,015.11
  6. Step 6: Final answer
    x = 5,283.59

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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.