Home / 1,395.40-2,086.96-1,050.36

Finding the Fourth Proportional to 1,395.40, 2,086.96 and 1,050.36

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Solution

The fourth proportional to 1,395.40, 2,086.96 and 1,050.36 is: 1,570.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.40 : 2,086.96 = 1,050.36 : x
  2. Step 2: Convert to fraction form
    1,395.40/2,086.96 = 1,050.36/x
  3. Step 3: Cross multiply
    1,395.40x = 2,086.96 × 1,050.36
  4. Step 4: Simplify right side
    1,395.40x = 2,192,059.31
  5. Step 5: Solve for x
    x = 2,192,059.31/1,395.40
  6. Step 6: Final answer
    x = 1,570.92

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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.