Home / 3,539.16-5,308.80-1,978.26

Finding the Fourth Proportional to 3,539.16, 5,308.80 and 1,978.26

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Solution

The fourth proportional to 3,539.16, 5,308.80 and 1,978.26 is: 2,967.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.16 : 5,308.80 = 1,978.26 : x
  2. Step 2: Convert to fraction form
    3,539.16/5,308.80 = 1,978.26/x
  3. Step 3: Cross multiply
    3,539.16x = 5,308.80 × 1,978.26
  4. Step 4: Simplify right side
    3,539.16x = 10,502,186.69
  5. Step 5: Solve for x
    x = 10,502,186.69/3,539.16
  6. Step 6: Final answer
    x = 2,967.42

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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.