Home / 5,135.61-7,087.10-2,897.50

Finding the Fourth Proportional to 5,135.61, 7,087.10 and 2,897.50

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Solution

The fourth proportional to 5,135.61, 7,087.10 and 2,897.50 is: 3,998.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.61 : 7,087.10 = 2,897.50 : x
  2. Step 2: Convert to fraction form
    5,135.61/7,087.10 = 2,897.50/x
  3. Step 3: Cross multiply
    5,135.61x = 7,087.10 × 2,897.50
  4. Step 4: Simplify right side
    5,135.61x = 20,534,872.25
  5. Step 5: Solve for x
    x = 20,534,872.25/5,135.61
  6. Step 6: Final answer
    x = 3,998.53

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1.5x scale

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.