Home / 3,005.04-4,146.84-1,678.71

Finding the Fourth Proportional to 3,005.04, 4,146.84 and 1,678.71

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Solution

The fourth proportional to 3,005.04, 4,146.84 and 1,678.71 is: 2,316.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.04 : 4,146.84 = 1,678.71 : x
  2. Step 2: Convert to fraction form
    3,005.04/4,146.84 = 1,678.71/x
  3. Step 3: Cross multiply
    3,005.04x = 4,146.84 × 1,678.71
  4. Step 4: Simplify right side
    3,005.04x = 6,961,341.78
  5. Step 5: Solve for x
    x = 6,961,341.78/3,005.04
  6. Step 6: Final answer
    x = 2,316.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.