Home / 7,318.16-10,078.80-6,323.12

Finding the Fourth Proportional to 7,318.16, 10,078.80 and 6,323.12

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Solution

The fourth proportional to 7,318.16, 10,078.80 and 6,323.12 is: 8,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.16 : 10,078.80 = 6,323.12 : x
  2. Step 2: Convert to fraction form
    7,318.16/10,078.80 = 6,323.12/x
  3. Step 3: Cross multiply
    7,318.16x = 10,078.80 × 6,323.12
  4. Step 4: Simplify right side
    7,318.16x = 63,729,461.86
  5. Step 5: Solve for x
    x = 63,729,461.86/7,318.16
  6. Step 6: Final answer
    x = 8,708.40

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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.