Home / 8,479.31-11,699.06-6,681.21

Finding the Fourth Proportional to 8,479.31, 11,699.06 and 6,681.21

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Solution

The fourth proportional to 8,479.31, 11,699.06 and 6,681.21 is: 9,218.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.31 : 11,699.06 = 6,681.21 : x
  2. Step 2: Convert to fraction form
    8,479.31/11,699.06 = 6,681.21/x
  3. Step 3: Cross multiply
    8,479.31x = 11,699.06 × 6,681.21
  4. Step 4: Simplify right side
    8,479.31x = 78,163,877.72
  5. Step 5: Solve for x
    x = 78,163,877.72/8,479.31
  6. Step 6: Final answer
    x = 9,218.19

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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.