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Finding the Fourth Proportional to 2,801.34, 3,865.68 and 1,559.34

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Solution

The fourth proportional to 2,801.34, 3,865.68 and 1,559.34 is: 2,151.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.34 : 3,865.68 = 1,559.34 : x
  2. Step 2: Convert to fraction form
    2,801.34/3,865.68 = 1,559.34/x
  3. Step 3: Cross multiply
    2,801.34x = 3,865.68 × 1,559.34
  4. Step 4: Simplify right side
    2,801.34x = 6,027,909.45
  5. Step 5: Solve for x
    x = 6,027,909.45/2,801.34
  6. Step 6: Final answer
    x = 2,151.80

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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.