Home / 9,409.98-12,985.77-5,218.23

Finding the Fourth Proportional to 9,409.98, 12,985.77 and 5,218.23

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Solution

The fourth proportional to 9,409.98, 12,985.77 and 5,218.23 is: 7,201.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,409.98 : 12,985.77 = 5,218.23 : x
  2. Step 2: Convert to fraction form
    9,409.98/12,985.77 = 5,218.23/x
  3. Step 3: Cross multiply
    9,409.98x = 12,985.77 × 5,218.23
  4. Step 4: Simplify right side
    9,409.98x = 67,762,734.59
  5. Step 5: Solve for x
    x = 67,762,734.59/9,409.98
  6. Step 6: Final answer
    x = 7,201.16

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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.