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Finding the Fourth Proportional to 2,670.78, 3,685.04 and 1,551.07

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Solution

The fourth proportional to 2,670.78, 3,685.04 and 1,551.07 is: 2,140.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.78 : 3,685.04 = 1,551.07 : x
  2. Step 2: Convert to fraction form
    2,670.78/3,685.04 = 1,551.07/x
  3. Step 3: Cross multiply
    2,670.78x = 3,685.04 × 1,551.07
  4. Step 4: Simplify right side
    2,670.78x = 5,715,754.99
  5. Step 5: Solve for x
    x = 5,715,754.99/2,670.78
  6. Step 6: Final answer
    x = 2,140.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.