Home / 3,127.94-4,315.65-1,948.58

Finding the Fourth Proportional to 3,127.94, 4,315.65 and 1,948.58

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Solution

The fourth proportional to 3,127.94, 4,315.65 and 1,948.58 is: 2,688.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.94 : 4,315.65 = 1,948.58 : x
  2. Step 2: Convert to fraction form
    3,127.94/4,315.65 = 1,948.58/x
  3. Step 3: Cross multiply
    3,127.94x = 4,315.65 × 1,948.58
  4. Step 4: Simplify right side
    3,127.94x = 8,409,389.28
  5. Step 5: Solve for x
    x = 8,409,389.28/3,127.94
  6. Step 6: Final answer
    x = 2,688.48

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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.