Home / 3,128.18-4,316.82-1,711.87

Finding the Fourth Proportional to 3,128.18, 4,316.82 and 1,711.87

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Solution

The fourth proportional to 3,128.18, 4,316.82 and 1,711.87 is: 2,362.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.18 : 4,316.82 = 1,711.87 : x
  2. Step 2: Convert to fraction form
    3,128.18/4,316.82 = 1,711.87/x
  3. Step 3: Cross multiply
    3,128.18x = 4,316.82 × 1,711.87
  4. Step 4: Simplify right side
    3,128.18x = 7,389,823.86
  5. Step 5: Solve for x
    x = 7,389,823.86/3,128.18
  6. Step 6: Final answer
    x = 2,362.34

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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.