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Finding the Fourth Proportional to 3,045.51, 4,202.78 and 1,719.17

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Solution

The fourth proportional to 3,045.51, 4,202.78 and 1,719.17 is: 2,372.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,045.51 : 4,202.78 = 1,719.17 : x
  2. Step 2: Convert to fraction form
    3,045.51/4,202.78 = 1,719.17/x
  3. Step 3: Cross multiply
    3,045.51x = 4,202.78 × 1,719.17
  4. Step 4: Simplify right side
    3,045.51x = 7,225,263.68
  5. Step 5: Solve for x
    x = 7,225,263.68/3,045.51
  6. Step 6: Final answer
    x = 2,372.43

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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.