Home / 3,130.76-4,696.96-1,281.26

Finding the Fourth Proportional to 3,130.76, 4,696.96 and 1,281.26

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Solution

The fourth proportional to 3,130.76, 4,696.96 and 1,281.26 is: 1,922.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.76 : 4,696.96 = 1,281.26 : x
  2. Step 2: Convert to fraction form
    3,130.76/4,696.96 = 1,281.26/x
  3. Step 3: Cross multiply
    3,130.76x = 4,696.96 × 1,281.26
  4. Step 4: Simplify right side
    3,130.76x = 6,018,026.97
  5. Step 5: Solve for x
    x = 6,018,026.97/3,130.76
  6. Step 6: Final answer
    x = 1,922.23

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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.