Home / 2,979.90-4,114.02-1,862.28

Finding the Fourth Proportional to 2,979.90, 4,114.02 and 1,862.28

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Solution

The fourth proportional to 2,979.90, 4,114.02 and 1,862.28 is: 2,571.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.90 : 4,114.02 = 1,862.28 : x
  2. Step 2: Convert to fraction form
    2,979.90/4,114.02 = 1,862.28/x
  3. Step 3: Cross multiply
    2,979.90x = 4,114.02 × 1,862.28
  4. Step 4: Simplify right side
    2,979.90x = 7,661,457.17
  5. Step 5: Solve for x
    x = 7,661,457.17/2,979.90
  6. Step 6: Final answer
    x = 2,571.05

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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.