Home / 7,078.36-10,618.74-2,920.62

Finding the Fourth Proportional to 7,078.36, 10,618.74 and 2,920.62

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Solution

The fourth proportional to 7,078.36, 10,618.74 and 2,920.62 is: 4,381.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.36 : 10,618.74 = 2,920.62 : x
  2. Step 2: Convert to fraction form
    7,078.36/10,618.74 = 2,920.62/x
  3. Step 3: Cross multiply
    7,078.36x = 10,618.74 × 2,920.62
  4. Step 4: Simplify right side
    7,078.36x = 31,013,304.42
  5. Step 5: Solve for x
    x = 31,013,304.42/7,078.36
  6. Step 6: Final answer
    x = 4,381.43

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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.