Home / 2,179.12-3,000.63-1,970.74

Finding the Fourth Proportional to 2,179.12, 3,000.63 and 1,970.74

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Solution

The fourth proportional to 2,179.12, 3,000.63 and 1,970.74 is: 2,713.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.12 : 3,000.63 = 1,970.74 : x
  2. Step 2: Convert to fraction form
    2,179.12/3,000.63 = 1,970.74/x
  3. Step 3: Cross multiply
    2,179.12x = 3,000.63 × 1,970.74
  4. Step 4: Simplify right side
    2,179.12x = 5,913,461.57
  5. Step 5: Solve for x
    x = 5,913,461.57/2,179.12
  6. Step 6: Final answer
    x = 2,713.69

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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.