Home / 7,189.30-9,921.21-4,045.49

Finding the Fourth Proportional to 7,189.30, 9,921.21 and 4,045.49

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Solution

The fourth proportional to 7,189.30, 9,921.21 and 4,045.49 is: 5,582.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.30 : 9,921.21 = 4,045.49 : x
  2. Step 2: Convert to fraction form
    7,189.30/9,921.21 = 4,045.49/x
  3. Step 3: Cross multiply
    7,189.30x = 9,921.21 × 4,045.49
  4. Step 4: Simplify right side
    7,189.30x = 40,136,155.84
  5. Step 5: Solve for x
    x = 40,136,155.84/7,189.30
  6. Step 6: Final answer
    x = 5,582.76

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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.