Home / 4,308.80-6,464.21-1,386.99

Finding the Fourth Proportional to 4,308.80, 6,464.21 and 1,386.99

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Solution

The fourth proportional to 4,308.80, 6,464.21 and 1,386.99 is: 2,080.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,308.80 : 6,464.21 = 1,386.99 : x
  2. Step 2: Convert to fraction form
    4,308.80/6,464.21 = 1,386.99/x
  3. Step 3: Cross multiply
    4,308.80x = 6,464.21 × 1,386.99
  4. Step 4: Simplify right side
    4,308.80x = 8,965,787.69
  5. Step 5: Solve for x
    x = 8,965,787.69/4,308.80
  6. Step 6: Final answer
    x = 2,080.81

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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.