Home / 2,611.89-3,602.19-1,858.20

Finding the Fourth Proportional to 2,611.89, 3,602.19 and 1,858.20

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Solution

The fourth proportional to 2,611.89, 3,602.19 and 1,858.20 is: 2,562.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.89 : 3,602.19 = 1,858.20 : x
  2. Step 2: Convert to fraction form
    2,611.89/3,602.19 = 1,858.20/x
  3. Step 3: Cross multiply
    2,611.89x = 3,602.19 × 1,858.20
  4. Step 4: Simplify right side
    2,611.89x = 6,693,589.46
  5. Step 5: Solve for x
    x = 6,693,589.46/2,611.89
  6. Step 6: Final answer
    x = 2,562.74

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1.5x scale

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.