Home / 2,179.30-3,266.58-717.40

Finding the Fourth Proportional to 2,179.30, 3,266.58 and 717.40

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Solution

The fourth proportional to 2,179.30, 3,266.58 and 717.40 is: 1,075.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.30 : 3,266.58 = 717.40 : x
  2. Step 2: Convert to fraction form
    2,179.30/3,266.58 = 717.40/x
  3. Step 3: Cross multiply
    2,179.30x = 3,266.58 × 717.40
  4. Step 4: Simplify right side
    2,179.30x = 2,343,444.49
  5. Step 5: Solve for x
    x = 2,343,444.49/2,179.30
  6. Step 6: Final answer
    x = 1,075.32

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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.