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Finding the Fourth Proportional to 3,877.76, 5,818.08 and 1,798.76

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Solution

The fourth proportional to 3,877.76, 5,818.08 and 1,798.76 is: 2,698.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.76 : 5,818.08 = 1,798.76 : x
  2. Step 2: Convert to fraction form
    3,877.76/5,818.08 = 1,798.76/x
  3. Step 3: Cross multiply
    3,877.76x = 5,818.08 × 1,798.76
  4. Step 4: Simplify right side
    3,877.76x = 10,465,329.58
  5. Step 5: Solve for x
    x = 10,465,329.58/3,877.76
  6. Step 6: Final answer
    x = 2,698.81

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1.5x scale

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.