Home / 7,990.50-11,988.63-5,795.40

Finding the Fourth Proportional to 7,990.50, 11,988.63 and 5,795.40

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Solution

The fourth proportional to 7,990.50, 11,988.63 and 5,795.40 is: 8,695.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.50 : 11,988.63 = 5,795.40 : x
  2. Step 2: Convert to fraction form
    7,990.50/11,988.63 = 5,795.40/x
  3. Step 3: Cross multiply
    7,990.50x = 11,988.63 × 5,795.40
  4. Step 4: Simplify right side
    7,990.50x = 69,478,906.30
  5. Step 5: Solve for x
    x = 69,478,906.30/7,990.50
  6. Step 6: Final answer
    x = 8,695.19

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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.