Home / 6,412.20-9,616.50-3,125.40

Finding the Fourth Proportional to 6,412.20, 9,616.50 and 3,125.40

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Solution

The fourth proportional to 6,412.20, 9,616.50 and 3,125.40 is: 4,687.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,412.20 : 9,616.50 = 3,125.40 : x
  2. Step 2: Convert to fraction form
    6,412.20/9,616.50 = 3,125.40/x
  3. Step 3: Cross multiply
    6,412.20x = 9,616.50 × 3,125.40
  4. Step 4: Simplify right side
    6,412.20x = 30,055,409.10
  5. Step 5: Solve for x
    x = 30,055,409.10/6,412.20
  6. Step 6: Final answer
    x = 4,687.22

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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.