Home / 8,985.24-12,399.09-5,208.11

Finding the Fourth Proportional to 8,985.24, 12,399.09 and 5,208.11

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Solution

The fourth proportional to 8,985.24, 12,399.09 and 5,208.11 is: 7,186.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.24 : 12,399.09 = 5,208.11 : x
  2. Step 2: Convert to fraction form
    8,985.24/12,399.09 = 5,208.11/x
  3. Step 3: Cross multiply
    8,985.24x = 12,399.09 × 5,208.11
  4. Step 4: Simplify right side
    8,985.24x = 64,575,762.62
  5. Step 5: Solve for x
    x = 64,575,762.62/8,985.24
  6. Step 6: Final answer
    x = 7,186.87

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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.