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Finding the Fourth Proportional to 2,866.68, 3,955.94 and 1,607.63

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Solution

The fourth proportional to 2,866.68, 3,955.94 and 1,607.63 is: 2,218.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.68 : 3,955.94 = 1,607.63 : x
  2. Step 2: Convert to fraction form
    2,866.68/3,955.94 = 1,607.63/x
  3. Step 3: Cross multiply
    2,866.68x = 3,955.94 × 1,607.63
  4. Step 4: Simplify right side
    2,866.68x = 6,359,687.82
  5. Step 5: Solve for x
    x = 6,359,687.82/2,866.68
  6. Step 6: Final answer
    x = 2,218.49

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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.