Home / 6,990.08-9,646.99-5,218.61

Finding the Fourth Proportional to 6,990.08, 9,646.99 and 5,218.61

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Solution

The fourth proportional to 6,990.08, 9,646.99 and 5,218.61 is: 7,202.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.08 : 9,646.99 = 5,218.61 : x
  2. Step 2: Convert to fraction form
    6,990.08/9,646.99 = 5,218.61/x
  3. Step 3: Cross multiply
    6,990.08x = 9,646.99 × 5,218.61
  4. Step 4: Simplify right side
    6,990.08x = 50,343,878.48
  5. Step 5: Solve for x
    x = 50,343,878.48/6,990.08
  6. Step 6: Final answer
    x = 7,202.19

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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.