Home / 9,412.09-12,986.40-5,220.34

Finding the Fourth Proportional to 9,412.09, 12,986.40 and 5,220.34

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Solution

The fourth proportional to 9,412.09, 12,986.40 and 5,220.34 is: 7,202.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.09 : 12,986.40 = 5,220.34 : x
  2. Step 2: Convert to fraction form
    9,412.09/12,986.40 = 5,220.34/x
  3. Step 3: Cross multiply
    9,412.09x = 12,986.40 × 5,220.34
  4. Step 4: Simplify right side
    9,412.09x = 67,793,423.38
  5. Step 5: Solve for x
    x = 67,793,423.38/9,412.09
  6. Step 6: Final answer
    x = 7,202.80

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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.