Home / 2,988.56-4,124.10-1,662.20

Finding the Fourth Proportional to 2,988.56, 4,124.10 and 1,662.20

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Solution

The fourth proportional to 2,988.56, 4,124.10 and 1,662.20 is: 2,293.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.56 : 4,124.10 = 1,662.20 : x
  2. Step 2: Convert to fraction form
    2,988.56/4,124.10 = 1,662.20/x
  3. Step 3: Cross multiply
    2,988.56x = 4,124.10 × 1,662.20
  4. Step 4: Simplify right side
    2,988.56x = 6,855,079.02
  5. Step 5: Solve for x
    x = 6,855,079.02/2,988.56
  6. Step 6: Final answer
    x = 2,293.77

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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.