Home / 3,387.30-4,674.26-1,970.88

Finding the Fourth Proportional to 3,387.30, 4,674.26 and 1,970.88

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Solution

The fourth proportional to 3,387.30, 4,674.26 and 1,970.88 is: 2,719.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.30 : 4,674.26 = 1,970.88 : x
  2. Step 2: Convert to fraction form
    3,387.30/4,674.26 = 1,970.88/x
  3. Step 3: Cross multiply
    3,387.30x = 4,674.26 × 1,970.88
  4. Step 4: Simplify right side
    3,387.30x = 9,212,405.55
  5. Step 5: Solve for x
    x = 9,212,405.55/3,387.30
  6. Step 6: Final answer
    x = 2,719.69

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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.