Home / 3,818.64-5,269.72-2,140.06

Finding the Fourth Proportional to 3,818.64, 5,269.72 and 2,140.06

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Solution

The fourth proportional to 3,818.64, 5,269.72 and 2,140.06 is: 2,953.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.64 : 5,269.72 = 2,140.06 : x
  2. Step 2: Convert to fraction form
    3,818.64/5,269.72 = 2,140.06/x
  3. Step 3: Cross multiply
    3,818.64x = 5,269.72 × 2,140.06
  4. Step 4: Simplify right side
    3,818.64x = 11,277,498.46
  5. Step 5: Solve for x
    x = 11,277,498.46/3,818.64
  6. Step 6: Final answer
    x = 2,953.28

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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.