Home / 8,722.40-12,035.28-5,186.48

Finding the Fourth Proportional to 8,722.40, 12,035.28 and 5,186.48

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Solution

The fourth proportional to 8,722.40, 12,035.28 and 5,186.48 is: 7,156.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.40 : 12,035.28 = 5,186.48 : x
  2. Step 2: Convert to fraction form
    8,722.40/12,035.28 = 5,186.48/x
  3. Step 3: Cross multiply
    8,722.40x = 12,035.28 × 5,186.48
  4. Step 4: Simplify right side
    8,722.40x = 62,420,739.01
  5. Step 5: Solve for x
    x = 62,420,739.01/8,722.40
  6. Step 6: Final answer
    x = 7,156.37

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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.