Home / 7,331.40-10,991.70-4,985.55

Finding the Fourth Proportional to 7,331.40, 10,991.70 and 4,985.55

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Solution

The fourth proportional to 7,331.40, 10,991.70 and 4,985.55 is: 7,474.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,331.40 : 10,991.70 = 4,985.55 : x
  2. Step 2: Convert to fraction form
    7,331.40/10,991.70 = 4,985.55/x
  3. Step 3: Cross multiply
    7,331.40x = 10,991.70 × 4,985.55
  4. Step 4: Simplify right side
    7,331.40x = 54,799,669.94
  5. Step 5: Solve for x
    x = 54,799,669.94/7,331.40
  6. Step 6: Final answer
    x = 7,474.65

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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.