Home / 1,429.11-2,133.88-1,265.49

Finding the Fourth Proportional to 1,429.11, 2,133.88 and 1,265.49

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Solution

The fourth proportional to 1,429.11, 2,133.88 and 1,265.49 is: 1,889.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.11 : 2,133.88 = 1,265.49 : x
  2. Step 2: Convert to fraction form
    1,429.11/2,133.88 = 1,265.49/x
  3. Step 3: Cross multiply
    1,429.11x = 2,133.88 × 1,265.49
  4. Step 4: Simplify right side
    1,429.11x = 2,700,400.64
  5. Step 5: Solve for x
    x = 2,700,400.64/1,429.11
  6. Step 6: Final answer
    x = 1,889.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.