Home / 5,283-7,928.80-2,686.68

Finding the Fourth Proportional to 5,283, 7,928.80 and 2,686.68

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Solution

The fourth proportional to 5,283, 7,928.80 and 2,686.68 is: 4,032.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,283 : 7,928.80 = 2,686.68 : x
  2. Step 2: Convert to fraction form
    5,283/7,928.80 = 2,686.68/x
  3. Step 3: Cross multiply
    5,283x = 7,928.80 × 2,686.68
  4. Step 4: Simplify right side
    5,283x = 21,302,148.38
  5. Step 5: Solve for x
    x = 21,302,148.38/5,283
  6. Step 6: Final answer
    x = 4,032.21

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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.