Home / 3,808.83-5,256.14-2,130.21

Finding the Fourth Proportional to 3,808.83, 5,256.14 and 2,130.21

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Solution

The fourth proportional to 3,808.83, 5,256.14 and 2,130.21 is: 2,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.83 : 5,256.14 = 2,130.21 : x
  2. Step 2: Convert to fraction form
    3,808.83/5,256.14 = 2,130.21/x
  3. Step 3: Cross multiply
    3,808.83x = 5,256.14 × 2,130.21
  4. Step 4: Simplify right side
    3,808.83x = 11,196,681.99
  5. Step 5: Solve for x
    x = 11,196,681.99/3,808.83
  6. Step 6: Final answer
    x = 2,939.66

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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.