Home / 4,260.68-6,390.86-1,339.08

Finding the Fourth Proportional to 4,260.68, 6,390.86 and 1,339.08

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Solution

The fourth proportional to 4,260.68, 6,390.86 and 1,339.08 is: 2,008.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,260.68 : 6,390.86 = 1,339.08 : x
  2. Step 2: Convert to fraction form
    4,260.68/6,390.86 = 1,339.08/x
  3. Step 3: Cross multiply
    4,260.68x = 6,390.86 × 1,339.08
  4. Step 4: Simplify right side
    4,260.68x = 8,557,872.81
  5. Step 5: Solve for x
    x = 8,557,872.81/4,260.68
  6. Step 6: Final answer
    x = 2,008.57

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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.