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Finding the Fourth Proportional to 2,886.66, 4,331.37 and 1,790.70

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Solution

The fourth proportional to 2,886.66, 4,331.37 and 1,790.70 is: 2,686.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.66 : 4,331.37 = 1,790.70 : x
  2. Step 2: Convert to fraction form
    2,886.66/4,331.37 = 1,790.70/x
  3. Step 3: Cross multiply
    2,886.66x = 4,331.37 × 1,790.70
  4. Step 4: Simplify right side
    2,886.66x = 7,756,184.26
  5. Step 5: Solve for x
    x = 7,756,184.26/2,886.66
  6. Step 6: Final answer
    x = 2,686.91

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.