Home / 4,269.12-6,405.30-1,959

Finding the Fourth Proportional to 4,269.12, 6,405.30 and 1,959

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Solution

The fourth proportional to 4,269.12, 6,405.30 and 1,959 is: 2,939.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,269.12 : 6,405.30 = 1,959 : x
  2. Step 2: Convert to fraction form
    4,269.12/6,405.30 = 1,959/x
  3. Step 3: Cross multiply
    4,269.12x = 6,405.30 × 1,959
  4. Step 4: Simplify right side
    4,269.12x = 12,547,982.70
  5. Step 5: Solve for x
    x = 12,547,982.70/4,269.12
  6. Step 6: Final answer
    x = 2,939.24

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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.