Home / 6,468.16-9,705.60-3,390.40

Finding the Fourth Proportional to 6,468.16, 9,705.60 and 3,390.40

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Solution

The fourth proportional to 6,468.16, 9,705.60 and 3,390.40 is: 5,087.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,468.16 : 9,705.60 = 3,390.40 : x
  2. Step 2: Convert to fraction form
    6,468.16/9,705.60 = 3,390.40/x
  3. Step 3: Cross multiply
    6,468.16x = 9,705.60 × 3,390.40
  4. Step 4: Simplify right side
    6,468.16x = 32,905,866.24
  5. Step 5: Solve for x
    x = 32,905,866.24/6,468.16
  6. Step 6: Final answer
    x = 5,087.36

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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.