Home / 3,079.84-4,619.28-999.90

Finding the Fourth Proportional to 3,079.84, 4,619.28 and 999.90

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Solution

The fourth proportional to 3,079.84, 4,619.28 and 999.90 is: 1,499.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.84 : 4,619.28 = 999.90 : x
  2. Step 2: Convert to fraction form
    3,079.84/4,619.28 = 999.90/x
  3. Step 3: Cross multiply
    3,079.84x = 4,619.28 × 999.90
  4. Step 4: Simplify right side
    3,079.84x = 4,618,818.07
  5. Step 5: Solve for x
    x = 4,618,818.07/3,079.84
  6. Step 6: Final answer
    x = 1,499.69

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Similar ratio
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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.