Home / 7,039.20-9,697.18-5,920.16

Finding the Fourth Proportional to 7,039.20, 9,697.18 and 5,920.16

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Solution

The fourth proportional to 7,039.20, 9,697.18 and 5,920.16 is: 8,155.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.20 : 9,697.18 = 5,920.16 : x
  2. Step 2: Convert to fraction form
    7,039.20/9,697.18 = 5,920.16/x
  3. Step 3: Cross multiply
    7,039.20x = 9,697.18 × 5,920.16
  4. Step 4: Simplify right side
    7,039.20x = 57,408,857.15
  5. Step 5: Solve for x
    x = 57,408,857.15/7,039.20
  6. Step 6: Final answer
    x = 8,155.59

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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.