Home / 6,405.20-9,588.60-5,637.20

Finding the Fourth Proportional to 6,405.20, 9,588.60 and 5,637.20

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Solution

The fourth proportional to 6,405.20, 9,588.60 and 5,637.20 is: 8,438.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.20 : 9,588.60 = 5,637.20 : x
  2. Step 2: Convert to fraction form
    6,405.20/9,588.60 = 5,637.20/x
  3. Step 3: Cross multiply
    6,405.20x = 9,588.60 × 5,637.20
  4. Step 4: Simplify right side
    6,405.20x = 54,052,855.92
  5. Step 5: Solve for x
    x = 54,052,855.92/6,405.20
  6. Step 6: Final answer
    x = 8,438.90

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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.