Home / 1,905.86-2,630.10-1,119.92

Finding the Fourth Proportional to 1,905.86, 2,630.10 and 1,119.92

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Solution

The fourth proportional to 1,905.86, 2,630.10 and 1,119.92 is: 1,545.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.86 : 2,630.10 = 1,119.92 : x
  2. Step 2: Convert to fraction form
    1,905.86/2,630.10 = 1,119.92/x
  3. Step 3: Cross multiply
    1,905.86x = 2,630.10 × 1,119.92
  4. Step 4: Simplify right side
    1,905.86x = 2,945,501.59
  5. Step 5: Solve for x
    x = 2,945,501.59/1,905.86
  6. Step 6: Final answer
    x = 1,545.50

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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.