Home / 8,218.90-11,339.49-4,681.90

Finding the Fourth Proportional to 8,218.90, 11,339.49 and 4,681.90

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Solution

The fourth proportional to 8,218.90, 11,339.49 and 4,681.90 is: 6,459.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.90 : 11,339.49 = 4,681.90 : x
  2. Step 2: Convert to fraction form
    8,218.90/11,339.49 = 4,681.90/x
  3. Step 3: Cross multiply
    8,218.90x = 11,339.49 × 4,681.90
  4. Step 4: Simplify right side
    8,218.90x = 53,090,358.23
  5. Step 5: Solve for x
    x = 53,090,358.23/8,218.90
  6. Step 6: Final answer
    x = 6,459.55

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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.