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Finding the Fourth Proportional to 8,152.55, 12,235.00 and 5,378.30

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Solution

The fourth proportional to 8,152.55, 12,235.00 and 5,378.30 is: 8,071.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,152.55 : 12,235.00 = 5,378.30 : x
  2. Step 2: Convert to fraction form
    8,152.55/12,235.00 = 5,378.30/x
  3. Step 3: Cross multiply
    8,152.55x = 12,235.00 × 5,378.30
  4. Step 4: Simplify right side
    8,152.55x = 65,803,481.84
  5. Step 5: Solve for x
    x = 65,803,481.84/8,152.55
  6. Step 6: Final answer
    x = 8,071.52

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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.