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Finding the Fourth Proportional to 5,304.40, 7,956.60 and 5,085.70

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Solution

The fourth proportional to 5,304.40, 7,956.60 and 5,085.70 is: 7,628.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,304.40 : 7,956.60 = 5,085.70 : x
  2. Step 2: Convert to fraction form
    5,304.40/7,956.60 = 5,085.70/x
  3. Step 3: Cross multiply
    5,304.40x = 7,956.60 × 5,085.70
  4. Step 4: Simplify right side
    5,304.40x = 40,464,880.62
  5. Step 5: Solve for x
    x = 40,464,880.62/5,304.40
  6. Step 6: Final answer
    x = 7,628.55

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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.