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Finding the Fourth Proportional to 1,609.80, 2,430.15 and 1,593.60

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Solution

The fourth proportional to 1,609.80, 2,430.15 and 1,593.60 is: 2,405.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.80 : 2,430.15 = 1,593.60 : x
  2. Step 2: Convert to fraction form
    1,609.80/2,430.15 = 1,593.60/x
  3. Step 3: Cross multiply
    1,609.80x = 2,430.15 × 1,593.60
  4. Step 4: Simplify right side
    1,609.80x = 3,872,687.04
  5. Step 5: Solve for x
    x = 3,872,687.04/1,609.80
  6. Step 6: Final answer
    x = 2,405.69

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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.