Home / 6,629.40-9,148.45-3,645.20

Finding the Fourth Proportional to 6,629.40, 9,148.45 and 3,645.20

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Solution

The fourth proportional to 6,629.40, 9,148.45 and 3,645.20 is: 5,030.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,629.40 : 9,148.45 = 3,645.20 : x
  2. Step 2: Convert to fraction form
    6,629.40/9,148.45 = 3,645.20/x
  3. Step 3: Cross multiply
    6,629.40x = 9,148.45 × 3,645.20
  4. Step 4: Simplify right side
    6,629.40x = 33,347,929.94
  5. Step 5: Solve for x
    x = 33,347,929.94/6,629.40
  6. Step 6: Final answer
    x = 5,030.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.