Home / 4,772.81-7,160.58-2,139.72

Finding the Fourth Proportional to 4,772.81, 7,160.58 and 2,139.72

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Solution

The fourth proportional to 4,772.81, 7,160.58 and 2,139.72 is: 3,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,772.81 : 7,160.58 = 2,139.72 : x
  2. Step 2: Convert to fraction form
    4,772.81/7,160.58 = 2,139.72/x
  3. Step 3: Cross multiply
    4,772.81x = 7,160.58 × 2,139.72
  4. Step 4: Simplify right side
    4,772.81x = 15,321,636.24
  5. Step 5: Solve for x
    x = 15,321,636.24/4,772.81
  6. Step 6: Final answer
    x = 3,210.20

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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.