Home / 7,021.49-9,689.22-4,187.03

Finding the Fourth Proportional to 7,021.49, 9,689.22 and 4,187.03

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Solution

The fourth proportional to 7,021.49, 9,689.22 and 4,187.03 is: 5,777.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.49 : 9,689.22 = 4,187.03 : x
  2. Step 2: Convert to fraction form
    7,021.49/9,689.22 = 4,187.03/x
  3. Step 3: Cross multiply
    7,021.49x = 9,689.22 × 4,187.03
  4. Step 4: Simplify right side
    7,021.49x = 40,569,006.37
  5. Step 5: Solve for x
    x = 40,569,006.37/7,021.49
  6. Step 6: Final answer
    x = 5,777.84

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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.