Home / 1,886.42-2,603.12-1,089.56

Finding the Fourth Proportional to 1,886.42, 2,603.12 and 1,089.56

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Solution

The fourth proportional to 1,886.42, 2,603.12 and 1,089.56 is: 1,503.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.42 : 2,603.12 = 1,089.56 : x
  2. Step 2: Convert to fraction form
    1,886.42/2,603.12 = 1,089.56/x
  3. Step 3: Cross multiply
    1,886.42x = 2,603.12 × 1,089.56
  4. Step 4: Simplify right side
    1,886.42x = 2,836,236.96
  5. Step 5: Solve for x
    x = 2,836,236.96/1,886.42
  6. Step 6: Final answer
    x = 1,503.51

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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.