Home / 1,430.91-2,143.50-942.48

Finding the Fourth Proportional to 1,430.91, 2,143.50 and 942.48

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Solution

The fourth proportional to 1,430.91, 2,143.50 and 942.48 is: 1,411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.91 : 2,143.50 = 942.48 : x
  2. Step 2: Convert to fraction form
    1,430.91/2,143.50 = 942.48/x
  3. Step 3: Cross multiply
    1,430.91x = 2,143.50 × 942.48
  4. Step 4: Simplify right side
    1,430.91x = 2,020,205.88
  5. Step 5: Solve for x
    x = 2,020,205.88/1,430.91
  6. Step 6: Final answer
    x = 1,411.83

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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.