Home / 2,979.50-4,111.40-1,653.17

Finding the Fourth Proportional to 2,979.50, 4,111.40 and 1,653.17

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Solution

The fourth proportional to 2,979.50, 4,111.40 and 1,653.17 is: 2,281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.50 : 4,111.40 = 1,653.17 : x
  2. Step 2: Convert to fraction form
    2,979.50/4,111.40 = 1,653.17/x
  3. Step 3: Cross multiply
    2,979.50x = 4,111.40 × 1,653.17
  4. Step 4: Simplify right side
    2,979.50x = 6,796,814.32
  5. Step 5: Solve for x
    x = 6,796,814.32/2,979.50
  6. Step 6: Final answer
    x = 2,281.20

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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.