Home / 9,021.81-12,448.11-5,242.79

Finding the Fourth Proportional to 9,021.81, 12,448.11 and 5,242.79

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Solution

The fourth proportional to 9,021.81, 12,448.11 and 5,242.79 is: 7,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,021.81 : 12,448.11 = 5,242.79 : x
  2. Step 2: Convert to fraction form
    9,021.81/12,448.11 = 5,242.79/x
  3. Step 3: Cross multiply
    9,021.81x = 12,448.11 × 5,242.79
  4. Step 4: Simplify right side
    9,021.81x = 65,262,877.41
  5. Step 5: Solve for x
    x = 65,262,877.41/9,021.81
  6. Step 6: Final answer
    x = 7,233.90

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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.