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Finding the Fourth Proportional to 1,809.26, 2,712.24 and 654.74

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Solution

The fourth proportional to 1,809.26, 2,712.24 and 654.74 is: 981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.26 : 2,712.24 = 654.74 : x
  2. Step 2: Convert to fraction form
    1,809.26/2,712.24 = 654.74/x
  3. Step 3: Cross multiply
    1,809.26x = 2,712.24 × 654.74
  4. Step 4: Simplify right side
    1,809.26x = 1,775,812.02
  5. Step 5: Solve for x
    x = 1,775,812.02/1,809.26
  6. Step 6: Final answer
    x = 981.51

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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.