Home / 1,479.34-2,219.76-986.08

Finding the Fourth Proportional to 1,479.34, 2,219.76 and 986.08

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Solution

The fourth proportional to 1,479.34, 2,219.76 and 986.08 is: 1,479.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.34 : 2,219.76 = 986.08 : x
  2. Step 2: Convert to fraction form
    1,479.34/2,219.76 = 986.08/x
  3. Step 3: Cross multiply
    1,479.34x = 2,219.76 × 986.08
  4. Step 4: Simplify right side
    1,479.34x = 2,188,856.01
  5. Step 5: Solve for x
    x = 2,188,856.01/1,479.34
  6. Step 6: Final answer
    x = 1,479.62

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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.