Home / 1,360.56-2,045.40-1,089.62

Finding the Fourth Proportional to 1,360.56, 2,045.40 and 1,089.62

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Solution

The fourth proportional to 1,360.56, 2,045.40 and 1,089.62 is: 1,638.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.56 : 2,045.40 = 1,089.62 : x
  2. Step 2: Convert to fraction form
    1,360.56/2,045.40 = 1,089.62/x
  3. Step 3: Cross multiply
    1,360.56x = 2,045.40 × 1,089.62
  4. Step 4: Simplify right side
    1,360.56x = 2,228,708.75
  5. Step 5: Solve for x
    x = 2,228,708.75/1,360.56
  6. Step 6: Final answer
    x = 1,638.08

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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.