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Finding the Fourth Proportional to 2,876.49, 3,970.55 and 1,814.99

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Solution

The fourth proportional to 2,876.49, 3,970.55 and 1,814.99 is: 2,505.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.49 : 3,970.55 = 1,814.99 : x
  2. Step 2: Convert to fraction form
    2,876.49/3,970.55 = 1,814.99/x
  3. Step 3: Cross multiply
    2,876.49x = 3,970.55 × 1,814.99
  4. Step 4: Simplify right side
    2,876.49x = 7,206,493.23
  5. Step 5: Solve for x
    x = 7,206,493.23/2,876.49
  6. Step 6: Final answer
    x = 2,505.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.