Home / 7,189.18-9,920.36-5,301.79

Finding the Fourth Proportional to 7,189.18, 9,920.36 and 5,301.79

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Solution

The fourth proportional to 7,189.18, 9,920.36 and 5,301.79 is: 7,315.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.18 : 9,920.36 = 5,301.79 : x
  2. Step 2: Convert to fraction form
    7,189.18/9,920.36 = 5,301.79/x
  3. Step 3: Cross multiply
    7,189.18x = 9,920.36 × 5,301.79
  4. Step 4: Simplify right side
    7,189.18x = 52,595,653.90
  5. Step 5: Solve for x
    x = 52,595,653.90/7,189.18
  6. Step 6: Final answer
    x = 7,315.95

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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.