Home / 2,145.08-2,974.78-2,077.65

Finding the Fourth Proportional to 2,145.08, 2,974.78 and 2,077.65

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Solution

The fourth proportional to 2,145.08, 2,974.78 and 2,077.65 is: 2,881.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.08 : 2,974.78 = 2,077.65 : x
  2. Step 2: Convert to fraction form
    2,145.08/2,974.78 = 2,077.65/x
  3. Step 3: Cross multiply
    2,145.08x = 2,974.78 × 2,077.65
  4. Step 4: Simplify right side
    2,145.08x = 6,180,542.58
  5. Step 5: Solve for x
    x = 6,180,542.58/2,145.08
  6. Step 6: Final answer
    x = 2,881.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.