Home / 6,456.09-9,686.49-3,988.08

Finding the Fourth Proportional to 6,456.09, 9,686.49 and 3,988.08

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Solution

The fourth proportional to 6,456.09, 9,686.49 and 3,988.08 is: 5,983.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,456.09 : 9,686.49 = 3,988.08 : x
  2. Step 2: Convert to fraction form
    6,456.09/9,686.49 = 3,988.08/x
  3. Step 3: Cross multiply
    6,456.09x = 9,686.49 × 3,988.08
  4. Step 4: Simplify right side
    6,456.09x = 38,630,497.04
  5. Step 5: Solve for x
    x = 38,630,497.04/6,456.09
  6. Step 6: Final answer
    x = 5,983.57

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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.