Home / 2,988.48-4,123.66-1,662.20

Finding the Fourth Proportional to 2,988.48, 4,123.66 and 1,662.20

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Solution

The fourth proportional to 2,988.48, 4,123.66 and 1,662.20 is: 2,293.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.48 : 4,123.66 = 1,662.20 : x
  2. Step 2: Convert to fraction form
    2,988.48/4,123.66 = 1,662.20/x
  3. Step 3: Cross multiply
    2,988.48x = 4,123.66 × 1,662.20
  4. Step 4: Simplify right side
    2,988.48x = 6,854,347.65
  5. Step 5: Solve for x
    x = 6,854,347.65/2,988.48
  6. Step 6: Final answer
    x = 2,293.59

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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.