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Finding the Fourth Proportional to 5,898.78, 8,150.40 and 5,151.60

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Solution

The fourth proportional to 5,898.78, 8,150.40 and 5,151.60 is: 7,118.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,898.78 : 8,150.40 = 5,151.60 : x
  2. Step 2: Convert to fraction form
    5,898.78/8,150.40 = 5,151.60/x
  3. Step 3: Cross multiply
    5,898.78x = 8,150.40 × 5,151.60
  4. Step 4: Simplify right side
    5,898.78x = 41,987,600.64
  5. Step 5: Solve for x
    x = 41,987,600.64/5,898.78
  6. Step 6: Final answer
    x = 7,118.01

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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.