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Finding the Fourth Proportional to 7,520.36, 10,378.74 and 4,376.36

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Solution

The fourth proportional to 7,520.36, 10,378.74 and 4,376.36 is: 6,039.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.36 : 10,378.74 = 4,376.36 : x
  2. Step 2: Convert to fraction form
    7,520.36/10,378.74 = 4,376.36/x
  3. Step 3: Cross multiply
    7,520.36x = 10,378.74 × 4,376.36
  4. Step 4: Simplify right side
    7,520.36x = 45,421,102.59
  5. Step 5: Solve for x
    x = 45,421,102.59/7,520.36
  6. Step 6: Final answer
    x = 6,039.75

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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.