Home / 5,135.72-7,087.30-2,898.07

Finding the Fourth Proportional to 5,135.72, 7,087.30 and 2,898.07

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Solution

The fourth proportional to 5,135.72, 7,087.30 and 2,898.07 is: 3,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.72 : 7,087.30 = 2,898.07 : x
  2. Step 2: Convert to fraction form
    5,135.72/7,087.30 = 2,898.07/x
  3. Step 3: Cross multiply
    5,135.72x = 7,087.30 × 2,898.07
  4. Step 4: Simplify right side
    5,135.72x = 20,539,466.55
  5. Step 5: Solve for x
    x = 20,539,466.55/5,135.72
  6. Step 6: Final answer
    x = 3,999.33

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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.