Home / 5,174.26-7,140.90-2,905.55

Finding the Fourth Proportional to 5,174.26, 7,140.90 and 2,905.55

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Solution

The fourth proportional to 5,174.26, 7,140.90 and 2,905.55 is: 4,009.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.26 : 7,140.90 = 2,905.55 : x
  2. Step 2: Convert to fraction form
    5,174.26/7,140.90 = 2,905.55/x
  3. Step 3: Cross multiply
    5,174.26x = 7,140.90 × 2,905.55
  4. Step 4: Simplify right side
    5,174.26x = 20,748,242.00
  5. Step 5: Solve for x
    x = 20,748,242.00/5,174.26
  6. Step 6: Final answer
    x = 4,009.90

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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.