Home / 1,528.35-2,107.74-1,292.81

Finding the Fourth Proportional to 1,528.35, 2,107.74 and 1,292.81

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Solution

The fourth proportional to 1,528.35, 2,107.74 and 1,292.81 is: 1,782.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.35 : 2,107.74 = 1,292.81 : x
  2. Step 2: Convert to fraction form
    1,528.35/2,107.74 = 1,292.81/x
  3. Step 3: Cross multiply
    1,528.35x = 2,107.74 × 1,292.81
  4. Step 4: Simplify right side
    1,528.35x = 2,724,896.81
  5. Step 5: Solve for x
    x = 2,724,896.81/1,528.35
  6. Step 6: Final answer
    x = 1,782.90

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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.