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Finding the Fourth Proportional to 1,711.50, 2,361.87 and 925.55

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Solution

The fourth proportional to 1,711.50, 2,361.87 and 925.55 is: 1,277.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.50 : 2,361.87 = 925.55 : x
  2. Step 2: Convert to fraction form
    1,711.50/2,361.87 = 925.55/x
  3. Step 3: Cross multiply
    1,711.50x = 2,361.87 × 925.55
  4. Step 4: Simplify right side
    1,711.50x = 2,186,012.97
  5. Step 5: Solve for x
    x = 2,186,012.97/1,711.50
  6. Step 6: Final answer
    x = 1,277.25

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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.