Home / 2,979.45-4,111.45-1,653.05

Finding the Fourth Proportional to 2,979.45, 4,111.45 and 1,653.05

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Solution

The fourth proportional to 2,979.45, 4,111.45 and 1,653.05 is: 2,281.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.45 : 4,111.45 = 1,653.05 : x
  2. Step 2: Convert to fraction form
    2,979.45/4,111.45 = 1,653.05/x
  3. Step 3: Cross multiply
    2,979.45x = 4,111.45 × 1,653.05
  4. Step 4: Simplify right side
    2,979.45x = 6,796,438.57
  5. Step 5: Solve for x
    x = 6,796,438.57/2,979.45
  6. Step 6: Final answer
    x = 2,281.11

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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.