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Finding the Fourth Proportional to 4,931.79, 7,399.41 and 3,080.74

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Solution

The fourth proportional to 4,931.79, 7,399.41 and 3,080.74 is: 4,622.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,931.79 : 7,399.41 = 3,080.74 : x
  2. Step 2: Convert to fraction form
    4,931.79/7,399.41 = 3,080.74/x
  3. Step 3: Cross multiply
    4,931.79x = 7,399.41 × 3,080.74
  4. Step 4: Simplify right side
    4,931.79x = 22,795,639.86
  5. Step 5: Solve for x
    x = 22,795,639.86/4,931.79
  6. Step 6: Final answer
    x = 4,622.18

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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.