Home / 5,291.15-7,937.63-2,172.84

Finding the Fourth Proportional to 5,291.15, 7,937.63 and 2,172.84

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Solution

The fourth proportional to 5,291.15, 7,937.63 and 2,172.84 is: 3,259.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.15 : 7,937.63 = 2,172.84 : x
  2. Step 2: Convert to fraction form
    5,291.15/7,937.63 = 2,172.84/x
  3. Step 3: Cross multiply
    5,291.15x = 7,937.63 × 2,172.84
  4. Step 4: Simplify right side
    5,291.15x = 17,247,189.11
  5. Step 5: Solve for x
    x = 17,247,189.11/5,291.15
  6. Step 6: Final answer
    x = 3,259.63

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1.5x scale

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.