Home / 4,614.78-6,920.69-1,981.58

Finding the Fourth Proportional to 4,614.78, 6,920.69 and 1,981.58

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Solution

The fourth proportional to 4,614.78, 6,920.69 and 1,981.58 is: 2,971.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,614.78 : 6,920.69 = 1,981.58 : x
  2. Step 2: Convert to fraction form
    4,614.78/6,920.69 = 1,981.58/x
  3. Step 3: Cross multiply
    4,614.78x = 6,920.69 × 1,981.58
  4. Step 4: Simplify right side
    4,614.78x = 13,713,856.38
  5. Step 5: Solve for x
    x = 13,713,856.38/4,614.78
  6. Step 6: Final answer
    x = 2,971.72

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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.