Home / 3,715.82-5,122.40-2,830.08

Finding the Fourth Proportional to 3,715.82, 5,122.40 and 2,830.08

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Solution

The fourth proportional to 3,715.82, 5,122.40 and 2,830.08 is: 3,901.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.82 : 5,122.40 = 2,830.08 : x
  2. Step 2: Convert to fraction form
    3,715.82/5,122.40 = 2,830.08/x
  3. Step 3: Cross multiply
    3,715.82x = 5,122.40 × 2,830.08
  4. Step 4: Simplify right side
    3,715.82x = 14,496,801.79
  5. Step 5: Solve for x
    x = 14,496,801.79/3,715.82
  6. Step 6: Final answer
    x = 3,901.37

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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.