Home / 2,988.59-4,123.85-1,662.12

Finding the Fourth Proportional to 2,988.59, 4,123.85 and 1,662.12

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Solution

The fourth proportional to 2,988.59, 4,123.85 and 1,662.12 is: 2,293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.59 : 4,123.85 = 1,662.12 : x
  2. Step 2: Convert to fraction form
    2,988.59/4,123.85 = 1,662.12/x
  3. Step 3: Cross multiply
    2,988.59x = 4,123.85 × 1,662.12
  4. Step 4: Simplify right side
    2,988.59x = 6,854,325.25
  5. Step 5: Solve for x
    x = 6,854,325.25/2,988.59
  6. Step 6: Final answer
    x = 2,293.50

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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.