Home / 6,531.85-9,017.79-3,980.56

Finding the Fourth Proportional to 6,531.85, 9,017.79 and 3,980.56

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Solution

The fourth proportional to 6,531.85, 9,017.79 and 3,980.56 is: 5,495.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,531.85 : 9,017.79 = 3,980.56 : x
  2. Step 2: Convert to fraction form
    6,531.85/9,017.79 = 3,980.56/x
  3. Step 3: Cross multiply
    6,531.85x = 9,017.79 × 3,980.56
  4. Step 4: Simplify right side
    6,531.85x = 35,895,809.07
  5. Step 5: Solve for x
    x = 35,895,809.07/6,531.85
  6. Step 6: Final answer
    x = 5,495.51

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1.5x scale

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.