Home / 3,610.88-5,412.67-1,421.14

Finding the Fourth Proportional to 3,610.88, 5,412.67 and 1,421.14

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Solution

The fourth proportional to 3,610.88, 5,412.67 and 1,421.14 is: 2,130.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,610.88 : 5,412.67 = 1,421.14 : x
  2. Step 2: Convert to fraction form
    3,610.88/5,412.67 = 1,421.14/x
  3. Step 3: Cross multiply
    3,610.88x = 5,412.67 × 1,421.14
  4. Step 4: Simplify right side
    3,610.88x = 7,692,154.74
  5. Step 5: Solve for x
    x = 7,692,154.74/3,610.88
  6. Step 6: Final answer
    x = 2,130.27

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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.