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Finding the Fourth Proportional to 1,888.70, 2,607.68 and 1,445.81

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Solution

The fourth proportional to 1,888.70, 2,607.68 and 1,445.81 is: 1,996.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.70 : 2,607.68 = 1,445.81 : x
  2. Step 2: Convert to fraction form
    1,888.70/2,607.68 = 1,445.81/x
  3. Step 3: Cross multiply
    1,888.70x = 2,607.68 × 1,445.81
  4. Step 4: Simplify right side
    1,888.70x = 3,770,202.59
  5. Step 5: Solve for x
    x = 3,770,202.59/1,888.70
  6. Step 6: Final answer
    x = 1,996.19

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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.