Home / 2,981.40-4,479.33-2,631.48

Finding the Fourth Proportional to 2,981.40, 4,479.33 and 2,631.48

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Solution

The fourth proportional to 2,981.40, 4,479.33 and 2,631.48 is: 3,953.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.40 : 4,479.33 = 2,631.48 : x
  2. Step 2: Convert to fraction form
    2,981.40/4,479.33 = 2,631.48/x
  3. Step 3: Cross multiply
    2,981.40x = 4,479.33 × 2,631.48
  4. Step 4: Simplify right side
    2,981.40x = 11,787,254.15
  5. Step 5: Solve for x
    x = 11,787,254.15/2,981.40
  6. Step 6: Final answer
    x = 3,953.60

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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.