Home / 7,811.86-10,778.70-4,626.16

Finding the Fourth Proportional to 7,811.86, 10,778.70 and 4,626.16

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Solution

The fourth proportional to 7,811.86, 10,778.70 and 4,626.16 is: 6,383.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.86 : 10,778.70 = 4,626.16 : x
  2. Step 2: Convert to fraction form
    7,811.86/10,778.70 = 4,626.16/x
  3. Step 3: Cross multiply
    7,811.86x = 10,778.70 × 4,626.16
  4. Step 4: Simplify right side
    7,811.86x = 49,863,913.77
  5. Step 5: Solve for x
    x = 49,863,913.77/7,811.86
  6. Step 6: Final answer
    x = 6,383.11

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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.