Home / 2,979.59-4,111.95-1,800.44

Finding the Fourth Proportional to 2,979.59, 4,111.95 and 1,800.44

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Solution

The fourth proportional to 2,979.59, 4,111.95 and 1,800.44 is: 2,484.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.59 : 4,111.95 = 1,800.44 : x
  2. Step 2: Convert to fraction form
    2,979.59/4,111.95 = 1,800.44/x
  3. Step 3: Cross multiply
    2,979.59x = 4,111.95 × 1,800.44
  4. Step 4: Simplify right side
    2,979.59x = 7,403,319.26
  5. Step 5: Solve for x
    x = 7,403,319.26/2,979.59
  6. Step 6: Final answer
    x = 2,484.68

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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.