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Finding the Fourth Proportional to 6,405.63, 9,615.26 and 5,669.92

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Solution

The fourth proportional to 6,405.63, 9,615.26 and 5,669.92 is: 8,510.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.63 : 9,615.26 = 5,669.92 : x
  2. Step 2: Convert to fraction form
    6,405.63/9,615.26 = 5,669.92/x
  3. Step 3: Cross multiply
    6,405.63x = 9,615.26 × 5,669.92
  4. Step 4: Simplify right side
    6,405.63x = 54,517,695.19
  5. Step 5: Solve for x
    x = 54,517,695.19/6,405.63
  6. Step 6: Final answer
    x = 8,510.90

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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.