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Finding the Fourth Proportional to 1,682.52, 2,525.07 and 860.72

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Solution

The fourth proportional to 1,682.52, 2,525.07 and 860.72 is: 1,291.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.52 : 2,525.07 = 860.72 : x
  2. Step 2: Convert to fraction form
    1,682.52/2,525.07 = 860.72/x
  3. Step 3: Cross multiply
    1,682.52x = 2,525.07 × 860.72
  4. Step 4: Simplify right side
    1,682.52x = 2,173,373.95
  5. Step 5: Solve for x
    x = 2,173,373.95/1,682.52
  6. Step 6: Final answer
    x = 1,291.74

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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.