Home / 3,005.11-4,147.02-1,678.95

Finding the Fourth Proportional to 3,005.11, 4,147.02 and 1,678.95

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Solution

The fourth proportional to 3,005.11, 4,147.02 and 1,678.95 is: 2,316.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.11 : 4,147.02 = 1,678.95 : x
  2. Step 2: Convert to fraction form
    3,005.11/4,147.02 = 1,678.95/x
  3. Step 3: Cross multiply
    3,005.11x = 4,147.02 × 1,678.95
  4. Step 4: Simplify right side
    3,005.11x = 6,962,639.23
  5. Step 5: Solve for x
    x = 6,962,639.23/3,005.11
  6. Step 6: Final answer
    x = 2,316.93

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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.