Home / 4,328.80-6,489.09-1,405.06

Finding the Fourth Proportional to 4,328.80, 6,489.09 and 1,405.06

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Solution

The fourth proportional to 4,328.80, 6,489.09 and 1,405.06 is: 2,106.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,328.80 : 6,489.09 = 1,405.06 : x
  2. Step 2: Convert to fraction form
    4,328.80/6,489.09 = 1,405.06/x
  3. Step 3: Cross multiply
    4,328.80x = 6,489.09 × 1,405.06
  4. Step 4: Simplify right side
    4,328.80x = 9,117,560.80
  5. Step 5: Solve for x
    x = 9,117,560.80/4,328.80
  6. Step 6: Final answer
    x = 2,106.26

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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.