Home / 2,678.53-4,012.93-2,620.21

Finding the Fourth Proportional to 2,678.53, 4,012.93 and 2,620.21

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Solution

The fourth proportional to 2,678.53, 4,012.93 and 2,620.21 is: 3,925.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.53 : 4,012.93 = 2,620.21 : x
  2. Step 2: Convert to fraction form
    2,678.53/4,012.93 = 2,620.21/x
  3. Step 3: Cross multiply
    2,678.53x = 4,012.93 × 2,620.21
  4. Step 4: Simplify right side
    2,678.53x = 10,514,719.32
  5. Step 5: Solve for x
    x = 10,514,719.32/2,678.53
  6. Step 6: Final answer
    x = 3,925.56

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1.5x scale

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.