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Finding the Fourth Proportional to 1,651.20, 2,493.60 and 1,651.20

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Solution

The fourth proportional to 1,651.20, 2,493.60 and 1,651.20 is: 2,493.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.20 : 2,493.60 = 1,651.20 : x
  2. Step 2: Convert to fraction form
    1,651.20/2,493.60 = 1,651.20/x
  3. Step 3: Cross multiply
    1,651.20x = 2,493.60 × 1,651.20
  4. Step 4: Simplify right side
    1,651.20x = 4,117,432.32
  5. Step 5: Solve for x
    x = 4,117,432.32/1,651.20
  6. Step 6: Final answer
    x = 2,493.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.