Home / 7,402.72-11,124.60-5,108.80

Finding the Fourth Proportional to 7,402.72, 11,124.60 and 5,108.80

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Solution

The fourth proportional to 7,402.72, 11,124.60 and 5,108.80 is: 7,677.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,402.72 : 11,124.60 = 5,108.80 : x
  2. Step 2: Convert to fraction form
    7,402.72/11,124.60 = 5,108.80/x
  3. Step 3: Cross multiply
    7,402.72x = 11,124.60 × 5,108.80
  4. Step 4: Simplify right side
    7,402.72x = 56,833,356.48
  5. Step 5: Solve for x
    x = 56,833,356.48/7,402.72
  6. Step 6: Final answer
    x = 7,677.36

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1.5x scale

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.