Home / 5,143.70-7,098.31-2,905.58

Finding the Fourth Proportional to 5,143.70, 7,098.31 and 2,905.58

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Solution

The fourth proportional to 5,143.70, 7,098.31 and 2,905.58 is: 4,009.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.70 : 7,098.31 = 2,905.58 : x
  2. Step 2: Convert to fraction form
    5,143.70/7,098.31 = 2,905.58/x
  3. Step 3: Cross multiply
    5,143.70x = 7,098.31 × 2,905.58
  4. Step 4: Simplify right side
    5,143.70x = 20,624,707.57
  5. Step 5: Solve for x
    x = 20,624,707.57/5,143.70
  6. Step 6: Final answer
    x = 4,009.70

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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.