Home / 5,439.36-8,153.60-2,520

Finding the Fourth Proportional to 5,439.36, 8,153.60 and 2,520

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Solution

The fourth proportional to 5,439.36, 8,153.60 and 2,520 is: 3,777.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.36 : 8,153.60 = 2,520 : x
  2. Step 2: Convert to fraction form
    5,439.36/8,153.60 = 2,520/x
  3. Step 3: Cross multiply
    5,439.36x = 8,153.60 × 2,520
  4. Step 4: Simplify right side
    5,439.36x = 20,547,072
  5. Step 5: Solve for x
    x = 20,547,072/5,439.36
  6. Step 6: Final answer
    x = 3,777.48

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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.