Home / 1,528.08-2,108.61-938.49

Finding the Fourth Proportional to 1,528.08, 2,108.61 and 938.49

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Solution

The fourth proportional to 1,528.08, 2,108.61 and 938.49 is: 1,295.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.08 : 2,108.61 = 938.49 : x
  2. Step 2: Convert to fraction form
    1,528.08/2,108.61 = 938.49/x
  3. Step 3: Cross multiply
    1,528.08x = 2,108.61 × 938.49
  4. Step 4: Simplify right side
    1,528.08x = 1,978,909.40
  5. Step 5: Solve for x
    x = 1,978,909.40/1,528.08
  6. Step 6: Final answer
    x = 1,295.03

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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.