Home / 1,426.40-1,969.01-928.85

Finding the Fourth Proportional to 1,426.40, 1,969.01 and 928.85

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Solution

The fourth proportional to 1,426.40, 1,969.01 and 928.85 is: 1,282.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.40 : 1,969.01 = 928.85 : x
  2. Step 2: Convert to fraction form
    1,426.40/1,969.01 = 928.85/x
  3. Step 3: Cross multiply
    1,426.40x = 1,969.01 × 928.85
  4. Step 4: Simplify right side
    1,426.40x = 1,828,900.45
  5. Step 5: Solve for x
    x = 1,828,900.45/1,426.40
  6. Step 6: Final answer
    x = 1,282.18

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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.