Home / 5,430.76-8,149.80-2,655.10

Finding the Fourth Proportional to 5,430.76, 8,149.80 and 2,655.10

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Solution

The fourth proportional to 5,430.76, 8,149.80 and 2,655.10 is: 3,984.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.76 : 8,149.80 = 2,655.10 : x
  2. Step 2: Convert to fraction form
    5,430.76/8,149.80 = 2,655.10/x
  3. Step 3: Cross multiply
    5,430.76x = 8,149.80 × 2,655.10
  4. Step 4: Simplify right side
    5,430.76x = 21,638,533.98
  5. Step 5: Solve for x
    x = 21,638,533.98/5,430.76
  6. Step 6: Final answer
    x = 3,984.44

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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.