Home / 7,847.40-10,831.44-4,861.47

Finding the Fourth Proportional to 7,847.40, 10,831.44 and 4,861.47

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Solution

The fourth proportional to 7,847.40, 10,831.44 and 4,861.47 is: 6,710.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,847.40 : 10,831.44 = 4,861.47 : x
  2. Step 2: Convert to fraction form
    7,847.40/10,831.44 = 4,861.47/x
  3. Step 3: Cross multiply
    7,847.40x = 10,831.44 × 4,861.47
  4. Step 4: Simplify right side
    7,847.40x = 52,656,720.62
  5. Step 5: Solve for x
    x = 52,656,720.62/7,847.40
  6. Step 6: Final answer
    x = 6,710.08

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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.