Home / 5,125.44-7,689.60-1,838.40

Finding the Fourth Proportional to 5,125.44, 7,689.60 and 1,838.40

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Solution

The fourth proportional to 5,125.44, 7,689.60 and 1,838.40 is: 2,758.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.44 : 7,689.60 = 1,838.40 : x
  2. Step 2: Convert to fraction form
    5,125.44/7,689.60 = 1,838.40/x
  3. Step 3: Cross multiply
    5,125.44x = 7,689.60 × 1,838.40
  4. Step 4: Simplify right side
    5,125.44x = 14,136,560.64
  5. Step 5: Solve for x
    x = 14,136,560.64/5,125.44
  6. Step 6: Final answer
    x = 2,758.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.