Home / 3,818.04-5,269-2,139.40

Finding the Fourth Proportional to 3,818.04, 5,269 and 2,139.40

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Solution

The fourth proportional to 3,818.04, 5,269 and 2,139.40 is: 2,952.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.04 : 5,269 = 2,139.40 : x
  2. Step 2: Convert to fraction form
    3,818.04/5,269 = 2,139.40/x
  3. Step 3: Cross multiply
    3,818.04x = 5,269 × 2,139.40
  4. Step 4: Simplify right side
    3,818.04x = 11,272,498.60
  5. Step 5: Solve for x
    x = 11,272,498.60/3,818.04
  6. Step 6: Final answer
    x = 2,952.43

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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.