Home / 7,943.78-11,915.59-2,020.68

Finding the Fourth Proportional to 7,943.78, 11,915.59 and 2,020.68

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Solution

The fourth proportional to 7,943.78, 11,915.59 and 2,020.68 is: 3,031.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.78 : 11,915.59 = 2,020.68 : x
  2. Step 2: Convert to fraction form
    7,943.78/11,915.59 = 2,020.68/x
  3. Step 3: Cross multiply
    7,943.78x = 11,915.59 × 2,020.68
  4. Step 4: Simplify right side
    7,943.78x = 24,077,589.35
  5. Step 5: Solve for x
    x = 24,077,589.35/7,943.78
  6. Step 6: Final answer
    x = 3,031.00

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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.