Home / 4,425.64-6,638.45-1,138.46

Finding the Fourth Proportional to 4,425.64, 6,638.45 and 1,138.46

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Solution

The fourth proportional to 4,425.64, 6,638.45 and 1,138.46 is: 1,707.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,425.64 : 6,638.45 = 1,138.46 : x
  2. Step 2: Convert to fraction form
    4,425.64/6,638.45 = 1,138.46/x
  3. Step 3: Cross multiply
    4,425.64x = 6,638.45 × 1,138.46
  4. Step 4: Simplify right side
    4,425.64x = 7,557,570.90
  5. Step 5: Solve for x
    x = 7,557,570.90/4,425.64
  6. Step 6: Final answer
    x = 1,707.68

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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.