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Finding the Fourth Proportional to 3,141.84, 4,335.78 and 1,725.65

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Solution

The fourth proportional to 3,141.84, 4,335.78 and 1,725.65 is: 2,381.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,141.84 : 4,335.78 = 1,725.65 : x
  2. Step 2: Convert to fraction form
    3,141.84/4,335.78 = 1,725.65/x
  3. Step 3: Cross multiply
    3,141.84x = 4,335.78 × 1,725.65
  4. Step 4: Simplify right side
    3,141.84x = 7,482,038.23
  5. Step 5: Solve for x
    x = 7,482,038.23/3,141.84
  6. Step 6: Final answer
    x = 2,381.42

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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.