Home / 6,518.47-8,990.91-4,001.80

Finding the Fourth Proportional to 6,518.47, 8,990.91 and 4,001.80

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Solution

The fourth proportional to 6,518.47, 8,990.91 and 4,001.80 is: 5,519.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,518.47 : 8,990.91 = 4,001.80 : x
  2. Step 2: Convert to fraction form
    6,518.47/8,990.91 = 4,001.80/x
  3. Step 3: Cross multiply
    6,518.47x = 8,990.91 × 4,001.80
  4. Step 4: Simplify right side
    6,518.47x = 35,979,823.64
  5. Step 5: Solve for x
    x = 35,979,823.64/6,518.47
  6. Step 6: Final answer
    x = 5,519.67

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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.