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Finding the Fourth Proportional to 1,609.53, 2,220.98 and 901.32

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Solution

The fourth proportional to 1,609.53, 2,220.98 and 901.32 is: 1,243.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.53 : 2,220.98 = 901.32 : x
  2. Step 2: Convert to fraction form
    1,609.53/2,220.98 = 901.32/x
  3. Step 3: Cross multiply
    1,609.53x = 2,220.98 × 901.32
  4. Step 4: Simplify right side
    1,609.53x = 2,001,813.69
  5. Step 5: Solve for x
    x = 2,001,813.69/1,609.53
  6. Step 6: Final answer
    x = 1,243.73

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1.5x scale

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.