Home / 5,430.26-8,145.40-1,326.26

Finding the Fourth Proportional to 5,430.26, 8,145.40 and 1,326.26

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Solution

The fourth proportional to 5,430.26, 8,145.40 and 1,326.26 is: 1,989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.26 : 8,145.40 = 1,326.26 : x
  2. Step 2: Convert to fraction form
    5,430.26/8,145.40 = 1,326.26/x
  3. Step 3: Cross multiply
    5,430.26x = 8,145.40 × 1,326.26
  4. Step 4: Simplify right side
    5,430.26x = 10,802,918.20
  5. Step 5: Solve for x
    x = 10,802,918.20/5,430.26
  6. Step 6: Final answer
    x = 1,989.39

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1.5x scale

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.