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Finding the Fourth Proportional to 2,259.07, 3,387.77 and 777.88

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Solution

The fourth proportional to 2,259.07, 3,387.77 and 777.88 is: 1,166.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.07 : 3,387.77 = 777.88 : x
  2. Step 2: Convert to fraction form
    2,259.07/3,387.77 = 777.88/x
  3. Step 3: Cross multiply
    2,259.07x = 3,387.77 × 777.88
  4. Step 4: Simplify right side
    2,259.07x = 2,635,268.11
  5. Step 5: Solve for x
    x = 2,635,268.11/2,259.07
  6. Step 6: Final answer
    x = 1,166.53

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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.