Home / 2,905-4,356.46-1,261.48

Finding the Fourth Proportional to 2,905, 4,356.46 and 1,261.48

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Solution

The fourth proportional to 2,905, 4,356.46 and 1,261.48 is: 1,891.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905 : 4,356.46 = 1,261.48 : x
  2. Step 2: Convert to fraction form
    2,905/4,356.46 = 1,261.48/x
  3. Step 3: Cross multiply
    2,905x = 4,356.46 × 1,261.48
  4. Step 4: Simplify right side
    2,905x = 5,495,587.16
  5. Step 5: Solve for x
    x = 5,495,587.16/2,905
  6. Step 6: Final answer
    x = 1,891.77

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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.