Home / 3,890,751.40-5,369,014.20-2,171,980.81

Finding the Fourth Proportional to 3,890,751.40, 5,369,014.20 and 2,171,980.81

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Solution

The fourth proportional to 3,890,751.40, 5,369,014.20 and 2,171,980.81 is: 2,997,209.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890,751.40 : 5,369,014.20 = 2,171,980.81 : x
  2. Step 2: Convert to fraction form
    3,890,751.40/5,369,014.20 = 2,171,980.81/x
  3. Step 3: Cross multiply
    3,890,751.40x = 5,369,014.20 × 2,171,980.81
  4. Step 4: Simplify right side
    3,890,751.40x = 11,661,395,811,017.50
  5. Step 5: Solve for x
    x = 11,661,395,811,017.50/3,890,751.40
  6. Step 6: Final answer
    x = 2,997,209.18

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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.