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Finding the Fourth Proportional to 4,638.88, 6,958.34 and 1,128.88

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Solution

The fourth proportional to 4,638.88, 6,958.34 and 1,128.88 is: 1,693.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,638.88 : 6,958.34 = 1,128.88 : x
  2. Step 2: Convert to fraction form
    4,638.88/6,958.34 = 1,128.88/x
  3. Step 3: Cross multiply
    4,638.88x = 6,958.34 × 1,128.88
  4. Step 4: Simplify right side
    4,638.88x = 7,855,130.86
  5. Step 5: Solve for x
    x = 7,855,130.86/4,638.88
  6. Step 6: Final answer
    x = 1,693.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.