Home / 5,143.40-7,098.28-2,905.52

Finding the Fourth Proportional to 5,143.40, 7,098.28 and 2,905.52

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Solution

The fourth proportional to 5,143.40, 7,098.28 and 2,905.52 is: 4,009.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.40 : 7,098.28 = 2,905.52 : x
  2. Step 2: Convert to fraction form
    5,143.40/7,098.28 = 2,905.52/x
  3. Step 3: Cross multiply
    5,143.40x = 7,098.28 × 2,905.52
  4. Step 4: Simplify right side
    5,143.40x = 20,624,208.02
  5. Step 5: Solve for x
    x = 20,624,208.02/5,143.40
  6. Step 6: Final answer
    x = 4,009.84

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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.