Home / 2,886.16-3,981.00-1,989.93

Finding the Fourth Proportional to 2,886.16, 3,981.00 and 1,989.93

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Solution

The fourth proportional to 2,886.16, 3,981.00 and 1,989.93 is: 2,744.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.16 : 3,981.00 = 1,989.93 : x
  2. Step 2: Convert to fraction form
    2,886.16/3,981.00 = 1,989.93/x
  3. Step 3: Cross multiply
    2,886.16x = 3,981.00 × 1,989.93
  4. Step 4: Simplify right side
    2,886.16x = 7,921,926.26
  5. Step 5: Solve for x
    x = 7,921,926.26/2,886.16
  6. Step 6: Final answer
    x = 2,744.80

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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.