Home / 2,988.17-4,123.77-1,643.83

Finding the Fourth Proportional to 2,988.17, 4,123.77 and 1,643.83

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Solution

The fourth proportional to 2,988.17, 4,123.77 and 1,643.83 is: 2,268.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.17 : 4,123.77 = 1,643.83 : x
  2. Step 2: Convert to fraction form
    2,988.17/4,123.77 = 1,643.83/x
  3. Step 3: Cross multiply
    2,988.17x = 4,123.77 × 1,643.83
  4. Step 4: Simplify right side
    2,988.17x = 6,778,783.54
  5. Step 5: Solve for x
    x = 6,778,783.54/2,988.17
  6. Step 6: Final answer
    x = 2,268.54

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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.