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Finding the Fourth Proportional to 1,646.80, 2,471.55 and 1,592.80

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Solution

The fourth proportional to 1,646.80, 2,471.55 and 1,592.80 is: 2,390.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.80 : 2,471.55 = 1,592.80 : x
  2. Step 2: Convert to fraction form
    1,646.80/2,471.55 = 1,592.80/x
  3. Step 3: Cross multiply
    1,646.80x = 2,471.55 × 1,592.80
  4. Step 4: Simplify right side
    1,646.80x = 3,936,684.84
  5. Step 5: Solve for x
    x = 3,936,684.84/1,646.80
  6. Step 6: Final answer
    x = 2,390.51

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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.