Home / 2,125.24-2,932.88-1,285.81

Finding the Fourth Proportional to 2,125.24, 2,932.88 and 1,285.81

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Solution

The fourth proportional to 2,125.24, 2,932.88 and 1,285.81 is: 1,774.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.24 : 2,932.88 = 1,285.81 : x
  2. Step 2: Convert to fraction form
    2,125.24/2,932.88 = 1,285.81/x
  3. Step 3: Cross multiply
    2,125.24x = 2,932.88 × 1,285.81
  4. Step 4: Simplify right side
    2,125.24x = 3,771,112.67
  5. Step 5: Solve for x
    x = 3,771,112.67/2,125.24
  6. Step 6: Final answer
    x = 1,774.44

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1.5x scale

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.