Home / 1,036.23-1,429.70-637.76

Finding the Fourth Proportional to 1,036.23, 1,429.70 and 637.76

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Solution

The fourth proportional to 1,036.23, 1,429.70 and 637.76 is: 879.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.23 : 1,429.70 = 637.76 : x
  2. Step 2: Convert to fraction form
    1,036.23/1,429.70 = 637.76/x
  3. Step 3: Cross multiply
    1,036.23x = 1,429.70 × 637.76
  4. Step 4: Simplify right side
    1,036.23x = 911,795.13
  5. Step 5: Solve for x
    x = 911,795.13/1,036.23
  6. Step 6: Final answer
    x = 879.92

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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.