Home / 8,937.12-13,406.90-5,190.66

Finding the Fourth Proportional to 8,937.12, 13,406.90 and 5,190.66

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Solution

The fourth proportional to 8,937.12, 13,406.90 and 5,190.66 is: 7,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,937.12 : 13,406.90 = 5,190.66 : x
  2. Step 2: Convert to fraction form
    8,937.12/13,406.90 = 5,190.66/x
  3. Step 3: Cross multiply
    8,937.12x = 13,406.90 × 5,190.66
  4. Step 4: Simplify right side
    8,937.12x = 69,590,659.55
  5. Step 5: Solve for x
    x = 69,590,659.55/8,937.12
  6. Step 6: Final answer
    x = 7,786.70

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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.