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Finding the Fourth Proportional to 6,384.40, 8,812.02 and 4,260.04

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Solution

The fourth proportional to 6,384.40, 8,812.02 and 4,260.04 is: 5,879.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,384.40 : 8,812.02 = 4,260.04 : x
  2. Step 2: Convert to fraction form
    6,384.40/8,812.02 = 4,260.04/x
  3. Step 3: Cross multiply
    6,384.40x = 8,812.02 × 4,260.04
  4. Step 4: Simplify right side
    6,384.40x = 37,539,557.68
  5. Step 5: Solve for x
    x = 37,539,557.68/6,384.40
  6. Step 6: Final answer
    x = 5,879.89

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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.