Home / 7,126.93-10,687.65-3,179.40

Finding the Fourth Proportional to 7,126.93, 10,687.65 and 3,179.40

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Solution

The fourth proportional to 7,126.93, 10,687.65 and 3,179.40 is: 4,767.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.93 : 10,687.65 = 3,179.40 : x
  2. Step 2: Convert to fraction form
    7,126.93/10,687.65 = 3,179.40/x
  3. Step 3: Cross multiply
    7,126.93x = 10,687.65 × 3,179.40
  4. Step 4: Simplify right side
    7,126.93x = 33,980,314.41
  5. Step 5: Solve for x
    x = 33,980,314.41/7,126.93
  6. Step 6: Final answer
    x = 4,767.88

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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.