Home / 1,447.07-2,170.96-407.07

Finding the Fourth Proportional to 1,447.07, 2,170.96 and 407.07

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Solution

The fourth proportional to 1,447.07, 2,170.96 and 407.07 is: 610.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.07 : 2,170.96 = 407.07 : x
  2. Step 2: Convert to fraction form
    1,447.07/2,170.96 = 407.07/x
  3. Step 3: Cross multiply
    1,447.07x = 2,170.96 × 407.07
  4. Step 4: Simplify right side
    1,447.07x = 883,731.67
  5. Step 5: Solve for x
    x = 883,731.67/1,447.07
  6. Step 6: Final answer
    x = 610.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.