Home / 7,878.89-11,820.39-2,948.91

Finding the Fourth Proportional to 7,878.89, 11,820.39 and 2,948.91

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Solution

The fourth proportional to 7,878.89, 11,820.39 and 2,948.91 is: 4,424.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.89 : 11,820.39 = 2,948.91 : x
  2. Step 2: Convert to fraction form
    7,878.89/11,820.39 = 2,948.91/x
  3. Step 3: Cross multiply
    7,878.89x = 11,820.39 × 2,948.91
  4. Step 4: Simplify right side
    7,878.89x = 34,857,266.27
  5. Step 5: Solve for x
    x = 34,857,266.27/7,878.89
  6. Step 6: Final answer
    x = 4,424.13

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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.