Home / 2,125.12-2,927.98-1,425.28

Finding the Fourth Proportional to 2,125.12, 2,927.98 and 1,425.28

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Solution

The fourth proportional to 2,125.12, 2,927.98 and 1,425.28 is: 1,963.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.12 : 2,927.98 = 1,425.28 : x
  2. Step 2: Convert to fraction form
    2,125.12/2,927.98 = 1,425.28/x
  3. Step 3: Cross multiply
    2,125.12x = 2,927.98 × 1,425.28
  4. Step 4: Simplify right side
    2,125.12x = 4,173,191.33
  5. Step 5: Solve for x
    x = 4,173,191.33/2,125.12
  6. Step 6: Final answer
    x = 1,963.74

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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.