Home / 7,421.85-11,120.40-5,226.66

Finding the Fourth Proportional to 7,421.85, 11,120.40 and 5,226.66

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Solution

The fourth proportional to 7,421.85, 11,120.40 and 5,226.66 is: 7,831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.85 : 11,120.40 = 5,226.66 : x
  2. Step 2: Convert to fraction form
    7,421.85/11,120.40 = 5,226.66/x
  3. Step 3: Cross multiply
    7,421.85x = 11,120.40 × 5,226.66
  4. Step 4: Simplify right side
    7,421.85x = 58,122,549.86
  5. Step 5: Solve for x
    x = 58,122,549.86/7,421.85
  6. Step 6: Final answer
    x = 7,831.28

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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.