Home / 2,572.50-3,858.68-1,988.34

Finding the Fourth Proportional to 2,572.50, 3,858.68 and 1,988.34

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Solution

The fourth proportional to 2,572.50, 3,858.68 and 1,988.34 is: 2,982.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.50 : 3,858.68 = 1,988.34 : x
  2. Step 2: Convert to fraction form
    2,572.50/3,858.68 = 1,988.34/x
  3. Step 3: Cross multiply
    2,572.50x = 3,858.68 × 1,988.34
  4. Step 4: Simplify right side
    2,572.50x = 7,672,367.79
  5. Step 5: Solve for x
    x = 7,672,367.79/2,572.50
  6. Step 6: Final answer
    x = 2,982.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.