Home / 3,890.61-5,368.05-2,377.77

Finding the Fourth Proportional to 3,890.61, 5,368.05 and 2,377.77

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Solution

The fourth proportional to 3,890.61, 5,368.05 and 2,377.77 is: 3,280.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.61 : 5,368.05 = 2,377.77 : x
  2. Step 2: Convert to fraction form
    3,890.61/5,368.05 = 2,377.77/x
  3. Step 3: Cross multiply
    3,890.61x = 5,368.05 × 2,377.77
  4. Step 4: Simplify right side
    3,890.61x = 12,763,988.25
  5. Step 5: Solve for x
    x = 12,763,988.25/3,890.61
  6. Step 6: Final answer
    x = 3,280.72

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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.