Home / 3,421.51-5,132.25-2,642.64

Finding the Fourth Proportional to 3,421.51, 5,132.25 and 2,642.64

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Solution

The fourth proportional to 3,421.51, 5,132.25 and 2,642.64 is: 3,963.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.51 : 5,132.25 = 2,642.64 : x
  2. Step 2: Convert to fraction form
    3,421.51/5,132.25 = 2,642.64/x
  3. Step 3: Cross multiply
    3,421.51x = 5,132.25 × 2,642.64
  4. Step 4: Simplify right side
    3,421.51x = 13,562,669.89
  5. Step 5: Solve for x
    x = 13,562,669.89/3,421.51
  6. Step 6: Final answer
    x = 3,963.95

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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.