Home / 4,648.40-6,972.56-1,138.43

Finding the Fourth Proportional to 4,648.40, 6,972.56 and 1,138.43

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Solution

The fourth proportional to 4,648.40, 6,972.56 and 1,138.43 is: 1,707.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,648.40 : 6,972.56 = 1,138.43 : x
  2. Step 2: Convert to fraction form
    4,648.40/6,972.56 = 1,138.43/x
  3. Step 3: Cross multiply
    4,648.40x = 6,972.56 × 1,138.43
  4. Step 4: Simplify right side
    4,648.40x = 7,937,771.48
  5. Step 5: Solve for x
    x = 7,937,771.48/4,648.40
  6. Step 6: Final answer
    x = 1,707.64

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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.