Home / 3,079.31-4,619.70-999.32

Finding the Fourth Proportional to 3,079.31, 4,619.70 and 999.32

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Solution

The fourth proportional to 3,079.31, 4,619.70 and 999.32 is: 1,499.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.31 : 4,619.70 = 999.32 : x
  2. Step 2: Convert to fraction form
    3,079.31/4,619.70 = 999.32/x
  3. Step 3: Cross multiply
    3,079.31x = 4,619.70 × 999.32
  4. Step 4: Simplify right side
    3,079.31x = 4,616,570.15
  5. Step 5: Solve for x
    x = 4,616,570.15/3,079.31
  6. Step 6: Final answer
    x = 1,499.22

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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.