Home / 3,886,862.12-5,363,855.70-2,167,981.28

Finding the Fourth Proportional to 3,886,862.12, 5,363,855.70 and 2,167,981.28

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Solution

The fourth proportional to 3,886,862.12, 5,363,855.70 and 2,167,981.28 is: 2,991,806.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886,862.12 : 5,363,855.70 = 2,167,981.28 : x
  2. Step 2: Convert to fraction form
    3,886,862.12/5,363,855.70 = 2,167,981.28/x
  3. Step 3: Cross multiply
    3,886,862.12x = 5,363,855.70 × 2,167,981.28
  4. Step 4: Simplify right side
    3,886,862.12x = 11,628,738,746,221.29
  5. Step 5: Solve for x
    x = 11,628,738,746,221.29/3,886,862.12
  6. Step 6: Final answer
    x = 2,991,806.34

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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.