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Finding the Fourth Proportional to 3,145.65, 4,695.51 and 2,704.20

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Solution

The fourth proportional to 3,145.65, 4,695.51 and 2,704.20 is: 4,036.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.65 : 4,695.51 = 2,704.20 : x
  2. Step 2: Convert to fraction form
    3,145.65/4,695.51 = 2,704.20/x
  3. Step 3: Cross multiply
    3,145.65x = 4,695.51 × 2,704.20
  4. Step 4: Simplify right side
    3,145.65x = 12,697,598.14
  5. Step 5: Solve for x
    x = 12,697,598.14/3,145.65
  6. Step 6: Final answer
    x = 4,036.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.