Home / 3,420.47-4,719.98-2,239.49

Finding the Fourth Proportional to 3,420.47, 4,719.98 and 2,239.49

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Solution

The fourth proportional to 3,420.47, 4,719.98 and 2,239.49 is: 3,090.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.47 : 4,719.98 = 2,239.49 : x
  2. Step 2: Convert to fraction form
    3,420.47/4,719.98 = 2,239.49/x
  3. Step 3: Cross multiply
    3,420.47x = 4,719.98 × 2,239.49
  4. Step 4: Simplify right side
    3,420.47x = 10,570,313.21
  5. Step 5: Solve for x
    x = 10,570,313.21/3,420.47
  6. Step 6: Final answer
    x = 3,090.31

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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.