Home / 2,775.08-4,152.96-1,720.40

Finding the Fourth Proportional to 2,775.08, 4,152.96 and 1,720.40

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Solution

The fourth proportional to 2,775.08, 4,152.96 and 1,720.40 is: 2,574.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.08 : 4,152.96 = 1,720.40 : x
  2. Step 2: Convert to fraction form
    2,775.08/4,152.96 = 1,720.40/x
  3. Step 3: Cross multiply
    2,775.08x = 4,152.96 × 1,720.40
  4. Step 4: Simplify right side
    2,775.08x = 7,144,752.38
  5. Step 5: Solve for x
    x = 7,144,752.38/2,775.08
  6. Step 6: Final answer
    x = 2,574.61

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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.