Home / 1,461.68-2,191.80-1,218.32

Finding the Fourth Proportional to 1,461.68, 2,191.80 and 1,218.32

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Solution

The fourth proportional to 1,461.68, 2,191.80 and 1,218.32 is: 1,826.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.68 : 2,191.80 = 1,218.32 : x
  2. Step 2: Convert to fraction form
    1,461.68/2,191.80 = 1,218.32/x
  3. Step 3: Cross multiply
    1,461.68x = 2,191.80 × 1,218.32
  4. Step 4: Simplify right side
    1,461.68x = 2,670,313.78
  5. Step 5: Solve for x
    x = 2,670,313.78/1,461.68
  6. Step 6: Final answer
    x = 1,826.88

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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.