Home / 3,615.03-5,421.20-1,422.56

Finding the Fourth Proportional to 3,615.03, 5,421.20 and 1,422.56

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Solution

The fourth proportional to 3,615.03, 5,421.20 and 1,422.56 is: 2,133.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.03 : 5,421.20 = 1,422.56 : x
  2. Step 2: Convert to fraction form
    3,615.03/5,421.20 = 1,422.56/x
  3. Step 3: Cross multiply
    3,615.03x = 5,421.20 × 1,422.56
  4. Step 4: Simplify right side
    3,615.03x = 7,711,988.71
  5. Step 5: Solve for x
    x = 7,711,988.71/3,615.03
  6. Step 6: Final answer
    x = 2,133.31

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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.