Home / 2,909.12-4,359.84-1,677.20

Finding the Fourth Proportional to 2,909.12, 4,359.84 and 1,677.20

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Solution

The fourth proportional to 2,909.12, 4,359.84 and 1,677.20 is: 2,513.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.12 : 4,359.84 = 1,677.20 : x
  2. Step 2: Convert to fraction form
    2,909.12/4,359.84 = 1,677.20/x
  3. Step 3: Cross multiply
    2,909.12x = 4,359.84 × 1,677.20
  4. Step 4: Simplify right side
    2,909.12x = 7,312,323.65
  5. Step 5: Solve for x
    x = 7,312,323.65/2,909.12
  6. Step 6: Final answer
    x = 2,513.59

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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.