Home / 3,420.01-4,720.31-2,672.49

Finding the Fourth Proportional to 3,420.01, 4,720.31 and 2,672.49

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Solution

The fourth proportional to 3,420.01, 4,720.31 and 2,672.49 is: 3,688.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.01 : 4,720.31 = 2,672.49 : x
  2. Step 2: Convert to fraction form
    3,420.01/4,720.31 = 2,672.49/x
  3. Step 3: Cross multiply
    3,420.01x = 4,720.31 × 2,672.49
  4. Step 4: Simplify right side
    3,420.01x = 12,614,967.91
  5. Step 5: Solve for x
    x = 12,614,967.91/3,420.01
  6. Step 6: Final answer
    x = 3,688.58

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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.