Home / 2,725.20-4,088.70-876.60

Finding the Fourth Proportional to 2,725.20, 4,088.70 and 876.60

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Solution

The fourth proportional to 2,725.20, 4,088.70 and 876.60 is: 1,315.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,725.20 : 4,088.70 = 876.60 : x
  2. Step 2: Convert to fraction form
    2,725.20/4,088.70 = 876.60/x
  3. Step 3: Cross multiply
    2,725.20x = 4,088.70 × 876.60
  4. Step 4: Simplify right side
    2,725.20x = 3,584,154.42
  5. Step 5: Solve for x
    x = 3,584,154.42/2,725.20
  6. Step 6: Final answer
    x = 1,315.19

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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.