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Finding the Fourth Proportional to 2,430.92, 3,355.01 and 1,368.77

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Solution

The fourth proportional to 2,430.92, 3,355.01 and 1,368.77 is: 1,889.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.92 : 3,355.01 = 1,368.77 : x
  2. Step 2: Convert to fraction form
    2,430.92/3,355.01 = 1,368.77/x
  3. Step 3: Cross multiply
    2,430.92x = 3,355.01 × 1,368.77
  4. Step 4: Simplify right side
    2,430.92x = 4,592,213.42
  5. Step 5: Solve for x
    x = 4,592,213.42/2,430.92
  6. Step 6: Final answer
    x = 1,889.09

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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.