Home / 3,818.16-5,271.48-2,638.80

Finding the Fourth Proportional to 3,818.16, 5,271.48 and 2,638.80

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Solution

The fourth proportional to 3,818.16, 5,271.48 and 2,638.80 is: 3,643.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.16 : 5,271.48 = 2,638.80 : x
  2. Step 2: Convert to fraction form
    3,818.16/5,271.48 = 2,638.80/x
  3. Step 3: Cross multiply
    3,818.16x = 5,271.48 × 2,638.80
  4. Step 4: Simplify right side
    3,818.16x = 13,910,381.42
  5. Step 5: Solve for x
    x = 13,910,381.42/3,818.16
  6. Step 6: Final answer
    x = 3,643.22

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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.