Home / 1,395.28-2,091.09-1,045.86

Finding the Fourth Proportional to 1,395.28, 2,091.09 and 1,045.86

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Solution

The fourth proportional to 1,395.28, 2,091.09 and 1,045.86 is: 1,567.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.28 : 2,091.09 = 1,045.86 : x
  2. Step 2: Convert to fraction form
    1,395.28/2,091.09 = 1,045.86/x
  3. Step 3: Cross multiply
    1,395.28x = 2,091.09 × 1,045.86
  4. Step 4: Simplify right side
    1,395.28x = 2,186,987.39
  5. Step 5: Solve for x
    x = 2,186,987.39/1,395.28
  6. Step 6: Final answer
    x = 1,567.42

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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.