Home / 3,128.22-4,316.91-1,711.94

Finding the Fourth Proportional to 3,128.22, 4,316.91 and 1,711.94

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Solution

The fourth proportional to 3,128.22, 4,316.91 and 1,711.94 is: 2,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.22 : 4,316.91 = 1,711.94 : x
  2. Step 2: Convert to fraction form
    3,128.22/4,316.91 = 1,711.94/x
  3. Step 3: Cross multiply
    3,128.22x = 4,316.91 × 1,711.94
  4. Step 4: Simplify right side
    3,128.22x = 7,390,269.32
  5. Step 5: Solve for x
    x = 7,390,269.32/3,128.22
  6. Step 6: Final answer
    x = 2,362.45

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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.