Home / 1,925.12-2,887.68-829.28

Finding the Fourth Proportional to 1,925.12, 2,887.68 and 829.28

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Solution

The fourth proportional to 1,925.12, 2,887.68 and 829.28 is: 1,243.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,925.12 : 2,887.68 = 829.28 : x
  2. Step 2: Convert to fraction form
    1,925.12/2,887.68 = 829.28/x
  3. Step 3: Cross multiply
    1,925.12x = 2,887.68 × 829.28
  4. Step 4: Simplify right side
    1,925.12x = 2,394,695.27
  5. Step 5: Solve for x
    x = 2,394,695.27/1,925.12
  6. Step 6: Final answer
    x = 1,243.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.