Home / 3,127.92-4,316.40-1,730.64

Finding the Fourth Proportional to 3,127.92, 4,316.40 and 1,730.64

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Solution

The fourth proportional to 3,127.92, 4,316.40 and 1,730.64 is: 2,388.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.92 : 4,316.40 = 1,730.64 : x
  2. Step 2: Convert to fraction form
    3,127.92/4,316.40 = 1,730.64/x
  3. Step 3: Cross multiply
    3,127.92x = 4,316.40 × 1,730.64
  4. Step 4: Simplify right side
    3,127.92x = 7,470,134.50
  5. Step 5: Solve for x
    x = 7,470,134.50/3,127.92
  6. Step 6: Final answer
    x = 2,388.21

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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.