Home / 4,209.87-6,314.55-1,287.93

Finding the Fourth Proportional to 4,209.87, 6,314.55 and 1,287.93

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Solution

The fourth proportional to 4,209.87, 6,314.55 and 1,287.93 is: 1,931.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.87 : 6,314.55 = 1,287.93 : x
  2. Step 2: Convert to fraction form
    4,209.87/6,314.55 = 1,287.93/x
  3. Step 3: Cross multiply
    4,209.87x = 6,314.55 × 1,287.93
  4. Step 4: Simplify right side
    4,209.87x = 8,132,698.38
  5. Step 5: Solve for x
    x = 8,132,698.38/4,209.87
  6. Step 6: Final answer
    x = 1,931.82

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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.