Home / 2,619.19-3,930.59-977.05

Finding the Fourth Proportional to 2,619.19, 3,930.59 and 977.05

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Solution

The fourth proportional to 2,619.19, 3,930.59 and 977.05 is: 1,466.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.19 : 3,930.59 = 977.05 : x
  2. Step 2: Convert to fraction form
    2,619.19/3,930.59 = 977.05/x
  3. Step 3: Cross multiply
    2,619.19x = 3,930.59 × 977.05
  4. Step 4: Simplify right side
    2,619.19x = 3,840,382.96
  5. Step 5: Solve for x
    x = 3,840,382.96/2,619.19
  6. Step 6: Final answer
    x = 1,466.25

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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.