Home / 1,140.36-1,706.88-591.78

Finding the Fourth Proportional to 1,140.36, 1,706.88 and 591.78

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Solution

The fourth proportional to 1,140.36, 1,706.88 and 591.78 is: 885.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.36 : 1,706.88 = 591.78 : x
  2. Step 2: Convert to fraction form
    1,140.36/1,706.88 = 591.78/x
  3. Step 3: Cross multiply
    1,140.36x = 1,706.88 × 591.78
  4. Step 4: Simplify right side
    1,140.36x = 1,010,106.07
  5. Step 5: Solve for x
    x = 1,010,106.07/1,140.36
  6. Step 6: Final answer
    x = 885.78

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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.