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Finding the Fourth Proportional to 1,974.99, 2,725.77 and 1,642.86

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Solution

The fourth proportional to 1,974.99, 2,725.77 and 1,642.86 is: 2,267.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.99 : 2,725.77 = 1,642.86 : x
  2. Step 2: Convert to fraction form
    1,974.99/2,725.77 = 1,642.86/x
  3. Step 3: Cross multiply
    1,974.99x = 2,725.77 × 1,642.86
  4. Step 4: Simplify right side
    1,974.99x = 4,478,058.50
  5. Step 5: Solve for x
    x = 4,478,058.50/1,974.99
  6. Step 6: Final answer
    x = 2,267.38

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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.