Home / 3,830.72-5,285.04-2,174.72

Finding the Fourth Proportional to 3,830.72, 5,285.04 and 2,174.72

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Solution

The fourth proportional to 3,830.72, 5,285.04 and 2,174.72 is: 3,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.72 : 5,285.04 = 2,174.72 : x
  2. Step 2: Convert to fraction form
    3,830.72/5,285.04 = 2,174.72/x
  3. Step 3: Cross multiply
    3,830.72x = 5,285.04 × 2,174.72
  4. Step 4: Simplify right side
    3,830.72x = 11,493,482.19
  5. Step 5: Solve for x
    x = 11,493,482.19/3,830.72
  6. Step 6: Final answer
    x = 3,000.35

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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.