Home / 3,440.12-4,747.47-1,948

Finding the Fourth Proportional to 3,440.12, 4,747.47 and 1,948

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Solution

The fourth proportional to 3,440.12, 4,747.47 and 1,948 is: 2,688.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440.12 : 4,747.47 = 1,948 : x
  2. Step 2: Convert to fraction form
    3,440.12/4,747.47 = 1,948/x
  3. Step 3: Cross multiply
    3,440.12x = 4,747.47 × 1,948
  4. Step 4: Simplify right side
    3,440.12x = 9,248,071.56
  5. Step 5: Solve for x
    x = 9,248,071.56/3,440.12
  6. Step 6: Final answer
    x = 2,688.30

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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.