Home / 6,931.80-10,400.12-4,331.68

Finding the Fourth Proportional to 6,931.80, 10,400.12 and 4,331.68

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Solution

The fourth proportional to 6,931.80, 10,400.12 and 4,331.68 is: 6,499.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931.80 : 10,400.12 = 4,331.68 : x
  2. Step 2: Convert to fraction form
    6,931.80/10,400.12 = 4,331.68/x
  3. Step 3: Cross multiply
    6,931.80x = 10,400.12 × 4,331.68
  4. Step 4: Simplify right side
    6,931.80x = 45,049,991.80
  5. Step 5: Solve for x
    x = 45,049,991.80/6,931.80
  6. Step 6: Final answer
    x = 6,499.03

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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.