Home / 5,268.90-7,904.61-1,981.92

Finding the Fourth Proportional to 5,268.90, 7,904.61 and 1,981.92

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Solution

The fourth proportional to 5,268.90, 7,904.61 and 1,981.92 is: 2,973.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,268.90 : 7,904.61 = 1,981.92 : x
  2. Step 2: Convert to fraction form
    5,268.90/7,904.61 = 1,981.92/x
  3. Step 3: Cross multiply
    5,268.90x = 7,904.61 × 1,981.92
  4. Step 4: Simplify right side
    5,268.90x = 15,666,304.65
  5. Step 5: Solve for x
    x = 15,666,304.65/5,268.90
  6. Step 6: Final answer
    x = 2,973.35

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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.