Home / 6,621.55-9,931.80-3,112.32

Finding the Fourth Proportional to 6,621.55, 9,931.80 and 3,112.32

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Solution

The fourth proportional to 6,621.55, 9,931.80 and 3,112.32 is: 4,668.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.55 : 9,931.80 = 3,112.32 : x
  2. Step 2: Convert to fraction form
    6,621.55/9,931.80 = 3,112.32/x
  3. Step 3: Cross multiply
    6,621.55x = 9,931.80 × 3,112.32
  4. Step 4: Simplify right side
    6,621.55x = 30,910,988.69
  5. Step 5: Solve for x
    x = 30,910,988.69/6,621.55
  6. Step 6: Final answer
    x = 4,668.24

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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.