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Finding the Fourth Proportional to 2,703.92, 4,053.12 and 948.40

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Solution

The fourth proportional to 2,703.92, 4,053.12 and 948.40 is: 1,421.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,703.92 : 4,053.12 = 948.40 : x
  2. Step 2: Convert to fraction form
    2,703.92/4,053.12 = 948.40/x
  3. Step 3: Cross multiply
    2,703.92x = 4,053.12 × 948.40
  4. Step 4: Simplify right side
    2,703.92x = 3,843,979.01
  5. Step 5: Solve for x
    x = 3,843,979.01/2,703.92
  6. Step 6: Final answer
    x = 1,421.63

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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.