Home / 3,127.86-4,314.59-1,948.70

Finding the Fourth Proportional to 3,127.86, 4,314.59 and 1,948.70

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Solution

The fourth proportional to 3,127.86, 4,314.59 and 1,948.70 is: 2,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.86 : 4,314.59 = 1,948.70 : x
  2. Step 2: Convert to fraction form
    3,127.86/4,314.59 = 1,948.70/x
  3. Step 3: Cross multiply
    3,127.86x = 4,314.59 × 1,948.70
  4. Step 4: Simplify right side
    3,127.86x = 8,407,842.58
  5. Step 5: Solve for x
    x = 8,407,842.58/3,127.86
  6. Step 6: Final answer
    x = 2,688.05

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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.