Home / 3,179.52-4,387.50-2,130.84

Finding the Fourth Proportional to 3,179.52, 4,387.50 and 2,130.84

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Solution

The fourth proportional to 3,179.52, 4,387.50 and 2,130.84 is: 2,940.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.52 : 4,387.50 = 2,130.84 : x
  2. Step 2: Convert to fraction form
    3,179.52/4,387.50 = 2,130.84/x
  3. Step 3: Cross multiply
    3,179.52x = 4,387.50 × 2,130.84
  4. Step 4: Simplify right side
    3,179.52x = 9,349,060.50
  5. Step 5: Solve for x
    x = 9,349,060.50/3,179.52
  6. Step 6: Final answer
    x = 2,940.40

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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.