Home / 1,039.16-1,434.50-619.66

Finding the Fourth Proportional to 1,039.16, 1,434.50 and 619.66

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Solution

The fourth proportional to 1,039.16, 1,434.50 and 619.66 is: 855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.16 : 1,434.50 = 619.66 : x
  2. Step 2: Convert to fraction form
    1,039.16/1,434.50 = 619.66/x
  3. Step 3: Cross multiply
    1,039.16x = 1,434.50 × 619.66
  4. Step 4: Simplify right side
    1,039.16x = 888,902.27
  5. Step 5: Solve for x
    x = 888,902.27/1,039.16
  6. Step 6: Final answer
    x = 855.40

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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.