Home / 7,188.45-9,921-4,045.24

Finding the Fourth Proportional to 7,188.45, 9,921 and 4,045.24

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Solution

The fourth proportional to 7,188.45, 9,921 and 4,045.24 is: 5,582.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.45 : 9,921 = 4,045.24 : x
  2. Step 2: Convert to fraction form
    7,188.45/9,921 = 4,045.24/x
  3. Step 3: Cross multiply
    7,188.45x = 9,921 × 4,045.24
  4. Step 4: Simplify right side
    7,188.45x = 40,132,826.04
  5. Step 5: Solve for x
    x = 40,132,826.04/7,188.45
  6. Step 6: Final answer
    x = 5,582.96

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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.