Home / 6,990.63-9,647.40-4,338.91

Finding the Fourth Proportional to 6,990.63, 9,647.40 and 4,338.91

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Solution

The fourth proportional to 6,990.63, 9,647.40 and 4,338.91 is: 5,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.63 : 9,647.40 = 4,338.91 : x
  2. Step 2: Convert to fraction form
    6,990.63/9,647.40 = 4,338.91/x
  3. Step 3: Cross multiply
    6,990.63x = 9,647.40 × 4,338.91
  4. Step 4: Simplify right side
    6,990.63x = 41,859,200.33
  5. Step 5: Solve for x
    x = 41,859,200.33/6,990.63
  6. Step 6: Final answer
    x = 5,987.90

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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.