Home / 1,036.66-1,430.83-931.56

Finding the Fourth Proportional to 1,036.66, 1,430.83 and 931.56

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Solution

The fourth proportional to 1,036.66, 1,430.83 and 931.56 is: 1,285.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.66 : 1,430.83 = 931.56 : x
  2. Step 2: Convert to fraction form
    1,036.66/1,430.83 = 931.56/x
  3. Step 3: Cross multiply
    1,036.66x = 1,430.83 × 931.56
  4. Step 4: Simplify right side
    1,036.66x = 1,332,903.99
  5. Step 5: Solve for x
    x = 1,332,903.99/1,036.66
  6. Step 6: Final answer
    x = 1,285.77

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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.