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Finding the Fourth Proportional to 1,812.62, 2,500.80 and 1,066.34

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Solution

The fourth proportional to 1,812.62, 2,500.80 and 1,066.34 is: 1,471.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.62 : 2,500.80 = 1,066.34 : x
  2. Step 2: Convert to fraction form
    1,812.62/2,500.80 = 1,066.34/x
  3. Step 3: Cross multiply
    1,812.62x = 2,500.80 × 1,066.34
  4. Step 4: Simplify right side
    1,812.62x = 2,666,703.07
  5. Step 5: Solve for x
    x = 2,666,703.07/1,812.62
  6. Step 6: Final answer
    x = 1,471.19

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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.