Home / 5,681.80-8,526.25-2,172.10

Finding the Fourth Proportional to 5,681.80, 8,526.25 and 2,172.10

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Solution

The fourth proportional to 5,681.80, 8,526.25 and 2,172.10 is: 3,259.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.80 : 8,526.25 = 2,172.10 : x
  2. Step 2: Convert to fraction form
    5,681.80/8,526.25 = 2,172.10/x
  3. Step 3: Cross multiply
    5,681.80x = 8,526.25 × 2,172.10
  4. Step 4: Simplify right side
    5,681.80x = 18,519,883.51
  5. Step 5: Solve for x
    x = 18,519,883.51/5,681.80
  6. Step 6: Final answer
    x = 3,259.51

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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.