Home / 1,725.42-2,381.00-979.28

Finding the Fourth Proportional to 1,725.42, 2,381.00 and 979.28

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Solution

The fourth proportional to 1,725.42, 2,381.00 and 979.28 is: 1,351.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.42 : 2,381.00 = 979.28 : x
  2. Step 2: Convert to fraction form
    1,725.42/2,381.00 = 979.28/x
  3. Step 3: Cross multiply
    1,725.42x = 2,381.00 × 979.28
  4. Step 4: Simplify right side
    1,725.42x = 2,331,654.46
  5. Step 5: Solve for x
    x = 2,331,654.46/1,725.42
  6. Step 6: Final answer
    x = 1,351.36

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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.