Home / 7,990.53-11,018.27-5,439.95

Finding the Fourth Proportional to 7,990.53, 11,018.27 and 5,439.95

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Solution

The fourth proportional to 7,990.53, 11,018.27 and 5,439.95 is: 7,501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.53 : 11,018.27 = 5,439.95 : x
  2. Step 2: Convert to fraction form
    7,990.53/11,018.27 = 5,439.95/x
  3. Step 3: Cross multiply
    7,990.53x = 11,018.27 × 5,439.95
  4. Step 4: Simplify right side
    7,990.53x = 59,938,755.60
  5. Step 5: Solve for x
    x = 59,938,755.60/7,990.53
  6. Step 6: Final answer
    x = 7,501.22

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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.