Home / 7,931.20-11,890.11-5,003.05

Finding the Fourth Proportional to 7,931.20, 11,890.11 and 5,003.05

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Solution

The fourth proportional to 7,931.20, 11,890.11 and 5,003.05 is: 7,500.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.20 : 11,890.11 = 5,003.05 : x
  2. Step 2: Convert to fraction form
    7,931.20/11,890.11 = 5,003.05/x
  3. Step 3: Cross multiply
    7,931.20x = 11,890.11 × 5,003.05
  4. Step 4: Simplify right side
    7,931.20x = 59,486,814.84
  5. Step 5: Solve for x
    x = 59,486,814.84/7,931.20
  6. Step 6: Final answer
    x = 7,500.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.