Home / 2,988.61-4,124.39-1,644.28

Finding the Fourth Proportional to 2,988.61, 4,124.39 and 1,644.28

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Solution

The fourth proportional to 2,988.61, 4,124.39 and 1,644.28 is: 2,269.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.61 : 4,124.39 = 1,644.28 : x
  2. Step 2: Convert to fraction form
    2,988.61/4,124.39 = 1,644.28/x
  3. Step 3: Cross multiply
    2,988.61x = 4,124.39 × 1,644.28
  4. Step 4: Simplify right side
    2,988.61x = 6,781,623.15
  5. Step 5: Solve for x
    x = 6,781,623.15/2,988.61
  6. Step 6: Final answer
    x = 2,269.16

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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.