Home / 4,209.34-6,314.04-1,287.70

Finding the Fourth Proportional to 4,209.34, 6,314.04 and 1,287.70

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Solution

The fourth proportional to 4,209.34, 6,314.04 and 1,287.70 is: 1,931.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.34 : 6,314.04 = 1,287.70 : x
  2. Step 2: Convert to fraction form
    4,209.34/6,314.04 = 1,287.70/x
  3. Step 3: Cross multiply
    4,209.34x = 6,314.04 × 1,287.70
  4. Step 4: Simplify right side
    4,209.34x = 8,130,589.31
  5. Step 5: Solve for x
    x = 8,130,589.31/4,209.34
  6. Step 6: Final answer
    x = 1,931.56

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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.