Home / 1,645.67-2,272.50-1,530.85

Finding the Fourth Proportional to 1,645.67, 2,272.50 and 1,530.85

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Solution

The fourth proportional to 1,645.67, 2,272.50 and 1,530.85 is: 2,113.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.67 : 2,272.50 = 1,530.85 : x
  2. Step 2: Convert to fraction form
    1,645.67/2,272.50 = 1,530.85/x
  3. Step 3: Cross multiply
    1,645.67x = 2,272.50 × 1,530.85
  4. Step 4: Simplify right side
    1,645.67x = 3,478,856.63
  5. Step 5: Solve for x
    x = 3,478,856.63/1,645.67
  6. Step 6: Final answer
    x = 2,113.95

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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.