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Finding the Fourth Proportional to 1,567.94, 2,163.93 and 869.38

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Solution

The fourth proportional to 1,567.94, 2,163.93 and 869.38 is: 1,199.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.94 : 2,163.93 = 869.38 : x
  2. Step 2: Convert to fraction form
    1,567.94/2,163.93 = 869.38/x
  3. Step 3: Cross multiply
    1,567.94x = 2,163.93 × 869.38
  4. Step 4: Simplify right side
    1,567.94x = 1,881,277.46
  5. Step 5: Solve for x
    x = 1,881,277.46/1,567.94
  6. Step 6: Final answer
    x = 1,199.84

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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.