Home / 2,590.40-3,876.48-1,616.96

Finding the Fourth Proportional to 2,590.40, 3,876.48 and 1,616.96

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Solution

The fourth proportional to 2,590.40, 3,876.48 and 1,616.96 is: 2,419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,590.40 : 3,876.48 = 1,616.96 : x
  2. Step 2: Convert to fraction form
    2,590.40/3,876.48 = 1,616.96/x
  3. Step 3: Cross multiply
    2,590.40x = 3,876.48 × 1,616.96
  4. Step 4: Simplify right side
    2,590.40x = 6,268,113.10
  5. Step 5: Solve for x
    x = 6,268,113.10/2,590.40
  6. Step 6: Final answer
    x = 2,419.75

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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.