Home / 3,124.50-4,680.62-2,081.40

Finding the Fourth Proportional to 3,124.50, 4,680.62 and 2,081.40

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Solution

The fourth proportional to 3,124.50, 4,680.62 and 2,081.40 is: 3,118.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.50 : 4,680.62 = 2,081.40 : x
  2. Step 2: Convert to fraction form
    3,124.50/4,680.62 = 2,081.40/x
  3. Step 3: Cross multiply
    3,124.50x = 4,680.62 × 2,081.40
  4. Step 4: Simplify right side
    3,124.50x = 9,742,242.47
  5. Step 5: Solve for x
    x = 9,742,242.47/3,124.50
  6. Step 6: Final answer
    x = 3,118.02

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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.