Home / 5,303.20-7,318.40-3,206.72

Finding the Fourth Proportional to 5,303.20, 7,318.40 and 3,206.72

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Solution

The fourth proportional to 5,303.20, 7,318.40 and 3,206.72 is: 4,425.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,303.20 : 7,318.40 = 3,206.72 : x
  2. Step 2: Convert to fraction form
    5,303.20/7,318.40 = 3,206.72/x
  3. Step 3: Cross multiply
    5,303.20x = 7,318.40 × 3,206.72
  4. Step 4: Simplify right side
    5,303.20x = 23,468,059.65
  5. Step 5: Solve for x
    x = 23,468,059.65/5,303.20
  6. Step 6: Final answer
    x = 4,425.26

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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.