Home / 1,042.22-1,430.32-943.76

Finding the Fourth Proportional to 1,042.22, 1,430.32 and 943.76

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Solution

The fourth proportional to 1,042.22, 1,430.32 and 943.76 is: 1,295.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.22 : 1,430.32 = 943.76 : x
  2. Step 2: Convert to fraction form
    1,042.22/1,430.32 = 943.76/x
  3. Step 3: Cross multiply
    1,042.22x = 1,430.32 × 943.76
  4. Step 4: Simplify right side
    1,042.22x = 1,349,878.80
  5. Step 5: Solve for x
    x = 1,349,878.80/1,042.22
  6. Step 6: Final answer
    x = 1,295.20

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.