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Finding the Fourth Proportional to 6,129.65, 8,459.54 and 3,612.54

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Solution

The fourth proportional to 6,129.65, 8,459.54 and 3,612.54 is: 4,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,129.65 : 8,459.54 = 3,612.54 : x
  2. Step 2: Convert to fraction form
    6,129.65/8,459.54 = 3,612.54/x
  3. Step 3: Cross multiply
    6,129.65x = 8,459.54 × 3,612.54
  4. Step 4: Simplify right side
    6,129.65x = 30,560,426.63
  5. Step 5: Solve for x
    x = 30,560,426.63/6,129.65
  6. Step 6: Final answer
    x = 4,985.67

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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.